Tag: exercise

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I think Champaign-Urbana is great. The university gives it cultural and scientific amenities far beyond its size. It’s a cheap place to live, which not only enables my lifestyle, it enables the lifestyle of any number of clever creative people who choose to live where they can make enough from their art to support themselves.

Just about the only thing that CU really lacks is relief—that is, a variation in height from one place to another.

What I mean to say is: it’s really, really flat. Take for example, this image:

Looking toward Yankee Ridge

That’s the hilly direction. I’m looking toward Yankee Ridge, which is about three miles away from where I’m standing. It may not look like much, but that hill in the distance is a big deal when you’re on a bicycle. At least, it is if you’re used to riding in Central Illinois.

Given the terrain, we don’t get enough hiking on hills, unless we make an effort to go to the hills. So, that’s what we did yesterday. We drove to Fox Ridge, a nearby state park which has some hills.

I remember hiking in Fox Ridge last summer, shortly before our big Kal-Haven trail hike, and finding that we were in pretty good shape for dealing with the hills, despite our very limited practice. That was less true this spring. I was a bit tired from my unexpectedly fast run the previous day, and we were both a bit out of shape from a lack of hills over the winter.

Still, we did okay. We saw some spring wildflowers, like these dutchman’s breeches:

img_20160416_101623469_26401844861_oAnd this buttercup:

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And this solomon’s seal:

img_20160416_110056171_26401892471_oTotal hiking was probably only a little over 3 miles, but the hills made it a very different sort of hike than our much longer hikes closer to home. Plus, we got to spend time in the woods.

So, that’s another bonus of Champaign-Urbana: We’ve got Fox Ridge State Park just 50 miles away.

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The weather finally became what I want from weather: gloriously warm and sunny. Friday I celebrated by going for a run.

Conventional wisdom for a while now has been that faster foot-turnover—at a rate of 180 steps per minute—is better. Supposedly it maximizes the amount of energy stored in the elastic properties of your feet and ankles which can then be returned as free energy in the next stride. Slower foot-turnover means you have to work harder twice—first, using muscle strength to absorb the energy of the foot-strike, and then using fresh muscle power to generate the next stride.

To work on that, I’d downloaded a metronome app to my phone, and set it to tick at 180 bpm. I started that up, and started running in sync with the ticking.

I’m sure it’s possible to run at a slow pace with fast foot-turnover, but doing so did not come naturally to me. I sprinted off down the road at quite a bit faster than my usual running pace.

Perhaps, if I’d focused on running slowly at 180-foot-strikes per minute I’d have been okay, but the other thing I was focusing on was making my foot-strikes as gentle as possible. (There’s recent research supporting the obvious: minimizing impact loading of each step reduces running injuries.)

With my attention focused on faster, lighter foot-strikes, I managed to get myself pretty out of breath in just a mile or so. At around 2 miles, I passed a playground that I like to pause at—I practice my balancing by running around the perimeter formed by (I think) 1×6 boards, and then do some inverted rows using a piece of playground equipment. That gave me a chance to catch my breath a little, and I walked for a minute or so after I finished there.

Once I started up running again, I ran a bit more slowly. I’d turned off the metronome, although I was trying to keep the 180 bpm pace in my head. I was doing a bit better at keeping a lower pace, until I came into sight of the traffic light to cross Route 45, and saw that Jackie was also approaching the intersection, about a block ahead of me.

I responded to that by picking up the pace (again), and managed to cross on the same walk signal. Then I quit running, and walked the rest of the way home with her. The run came in a 3.2 miles, at an average pace that is nothing to write home about, except that it includes the time playing on the playground equipment.

Next step: Figure out how to run slowly with fast foot-turnover.

By the way, this is still true:

The image at the top is the view out the study window, where you can see that our neighbor’s flowering tree is in full bloom. Ours is perhaps a day or two behind.

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Having written about endocannabinoids as the likely source of runners high, I wanted to draw people’s attention to this report, which talks (in the middle third) about the use of exogenous cannabinoids by athletes.

If runner’s high is not enough, why do people exercise on THC, the active ingredient in cannabis? It is not unusual for athletes, like other social groups that follow common routines, to combine popular lifestyle activities like alcohol (beer after racing) and food consumption (pre-race pasta parties), with others in the clan. The same appears true of cannabis use, enhancing leisure and social activities such as getting together for a run or race.

Source: REPORT: Smoking and Exercise – Dr. Phil Maffetone

Even the first bit (on nicotine as a possible performance-enhancing drug) is interesting, with an appropriate emphasis on tobacco’s dangers. The bit on marijuana, viewed largely through the lens of its possible beneficial effects both during and after exercise, made for a nice contrast.

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I like to have something around which to organize my walking. Training for our big Kalamazoo to South Haven hike worked great, but having completed that I was looking for something new.

Via Nerd Fitness’s How to walk to Mordor page, I found this little page on Walking to Rivendell, and I think that just might be what I was looking for.

Way back in 2003, some clever people got the idea to go through The Fellowship of the Ring (and a handy Atlas of Middle Earth) and note down all the legs of Frodo’s journey from Hobbiton to Rivendell. Then, as they did their own daily walking, they tracked their progress, noting each milestone as they passed it. (Five miles along; crossed the Great Road from the Brandywine Bridge and entered Tookland.)

Jackie doesn’t seem to have the same strange urge I do to organize walks around some arbitrary or fantasy goal, but she has embraced the idea with some enthusiasm, and decided that we should begin at the beginning and follow the path of Bilbo’s journey to Rivendell. It begins with a hurried dash from Bag End to The Green Dragon in Bywater, then down the Great East Road to a camp site a couple of miles past the three farthing stone, for a total of 11 miles.

We won’t match Bilbo’s journey day by day, but we thought we’d at least start with an 11-mile walk to get into the spirit of the thing.

So yesterday we did.

To make the mileage come out right (and to avoid a boring bit of the walk that we do all the time), we took the bus to campus and started our walk there.

From the Research Park (just across the street from my old office) we walked through campus and on to the Urbana Library (where we returned a library book and checked out another), then went across the street to Lincoln Square Village where we had lunch in their little food court. We went back to the library where we split a brownie for desert and lingered over coffee. Then we headed west across the north end of campus, paused briefly in the Engineering Quad so I could play just a bit of Ingress, and proceeded to the water amenities at 2nd street.

We’d had lunch early, so it was at just about this point that the vitamin D window opened. It was preternaturally warm and sunny, so I took off my jacket and put it in my pack and we spent a half hour or so comprehensively walking the paths through both halves of the water amenities (with my arms exposed to the deadly ultraviolet light of the sun) before heading on to downtown Champaign. We walked through West Side Park, near our 2014 summer place, and then turned south and walked past our 2014–2015 winter palace.

Not far south of there, we passed a house where the grassy verge between the sidewalk and the road was filled with these tiny ceramic houses:

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Not exactly Rivendell’s last homely house, but I felt they were adequately in the spirit of elven houses anyway.

From there we proceeded to Hessel Park, and thence along familiar paths to home.

I neglected to run Endomondo, but Google Fit claims I walked 11.1 miles.

It was a great walk! Jackie had a sore shoulder and didn’t want to carry a pack, so I carried not only the library book, but also the first aid kit, our lunches, and water for two.

Jackie with our water bottles
Jackie with our water bottles

Speaking of water, last year Jackie bought one of these Camelbak water bottles, and was very pleased with it. I was happy enough using bicycle-style water bottles. But—by sheerest happenstance—the kindly admins at Wise Bread gave me (as a thank-you gift for being one of their writers) the exact same water bottle as Jackie’s—except that mine has the Wise Bread logo.

These bottles are a little bigger than the ones I carried last year. That together with the library book made my pack a little heavier—enough to be noticeable, but not too much for a walk to Rivendell.

I wore my minimalist boots, which seemed like a nice compromise between my regular hiking boots and going barefoot like a hobbit. In the summer I plan to get back to barefoot walking in a big way (although it may be a while before I’m taking my long walks barefoot).

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Via an Art of Manliness podcast interview with Steve Kamb, I just learned about his new book Level Up Your Life. The book is just out, so it’s not so surprising that I hadn’t been aware of it before, but I’m a bit surprised that I hadn’t been more aware of the author’s website Nerd Fitness, which has been around for a while.

The site can’t be completely new to me: my browser remembers that I previously visited the definitive guide to parkour for beginners page, but I must have been totally focused on parkour that day, because I didn’t notice that the site is also full of other stuff that is very much my sort of thing: gamifying exercise (and life).

I haven’t read the book, but the interview laid out the case for how gamification can help you succeed, and not just at exercise. Kamb described how to use the motivational tricks of video games—that ones that keep you playing for one more minute, and then one more level, and then one more quest—and apply them to real life. Figure out what you want to do, and then divide those big goals into quests. Just like in a game, design a series of sub-quests, each one designed to give you the skills and experience to accomplish the next sub-quest, until finally you’re ready for the final level, where you face the biggest challenges, and overcome them.

It works great for fitness, where you can set a whole series of fitness goals, but the author was clear that it worked just as well for non-fitness goals. He talked in particular about international travel—that he wanted to do, but found intimidating, and that he approached by designing a series of trips that let him overcome one daunting aspect at a time (distance, foreign language, traveling alone, etc.). He also talked about learning to play a musical instrument, and then leveling up to where he could perform for an audience.

As someone who does just a little gamification of his own life, I got a bunch of useful ideas from the interview.

One I liked was a way to help you divide your attention among the inevitably many high-priority items in your life: the classic comic book trick of a secret identity. By day, a mild-mannered cubicle worker; by night, a secret agent honing his parkour skills for when he’ll need them to complete his mission (and survive the aftermath). Just like any superhero, you need to give both parts of your life the full attention they’re due.

Another was to use a trick nabbed from games for designing rewards for successfully leveling up: Instead of rewarding yourself with a taste of failure (such as rewarding yourself for losing weight with a supersized fast-food meal), do what video games do: give yourself a reward that improves your chance of success with the next quest. If your quest was to learn how to cook, reward yourself at level 5 by buying a really good chef’s knife, and then at level 20 by traveling to France for a workshop at a world-class cooking school. If you pay careful attention to this as you design your series of sub-quests—instead of just making it up as you go along—I can see you drastically increasing your chance of success at many of the harder sub-quests (because you have provided yourself with the right tool), while simultaneously saving a bunch of money.

Another is to gather allies for your quest. It is very hard to succeed in any area of your life unless the people around you are also successes in their lives. There is a certain temptation to be a big fish in a small pond—to gather people around you that you’re superior to—but then you don’t have people you can rely on when you face problems you can’t handle. There is also the temptation to let people who are better than you do for you what you can’t do yourself—but what would their motivation be? Just as in a multi-player video game, in real life you’re better off (and have more fun) if you have a team of people at about your level. If you’re a beginner, you certainly want a few higher-level players to help, and it’s always okay to have a few lower-level players that you can mentor. Ideally—and it often works out this way in practice—everyone will be better than you at some things and not as good at others. Then you can both help one another out; both learn from one another.

Those are just the things I remember from the interview, there’s more to it than that.

It sounds like a great book. I’ll have to get a copy, and I’ll also have to take a closer look at both Nerd Fitness and the book’s companion site Level Up Your Life.

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A year or more ago, I came upon a pretty good article (linked at the bottom of this post) with some good, basic exercises intended to provide a base for parkour training. I’d had it in my head to do those exercises last winter and be ready to do some serious parkour training in the spring. I even did some. Then spring came, and I realized that I hadn’t done them consistently enough to have done myself much good. I felt like I’d wasted the winter.

I ended up not pursuing parkour the way I’d planned, mainly because I didn’t want to risk even minor injuries during the run-up to our big Kal-Haven Trail walk, but also because I really didn’t have the base to train seriously.

I want to avoid that this year, so I thought I’d sketch out a plan for building my base for parkour—and as long as I was doing that, I figured I might as well document it here for easy reference.

To help me focus, I’m holding the list to just four things (on top of my usual walking, running, taiji, etc.).

Squatting

My goal here is to get to where I can do a full, deep squat, and then hang out comfortably in that position. I can get down into a deep squat, but to do so I have to curl forward and stretch my arms forward, to get my center of balance over my feet and not topple over backwards. I’m pretty sure this is due to flexibility issues, rather than strength issues.

I came across a pretty good page on diagnosing and addressing squat flexibility issues, which would have me believe that tight calf muscles and tight hip-flexor muscles are likely culprits.

I’m already doing calf stretches, both straight-knee and bent-knee. I’ll try and be a bit more consistent about that.

The suggested exercise for hip flexors is a crescent lunge, which looks pretty good. Based on other stuff I’ve read, I suspect that I also want to work on releasing my psoas, so I’ll include that as well.

me squattingIn addition to all this prep work, I’ll also spend some time squatting with some sort of support or another. I know three ways to do this. First, elevate the heels, so that calf tightness doesn’t limit the squat. Second, just hang onto something (like a door frame or a tree trunk) so that I can avoid toppling backwards. Third, do goblet squats, where the weight of the dumbbell works to shift my center of gravity forward.

I might also try prisoner squats. I won’t be able to go all the way down, but it’ll give me a chance to keep my back nice and straight, and then see how low I can go with a straight back.

Success will be when I can get all the way down with a straight back, and then use my hands to manipulate things that are nearby.

Toe Stretches

Last summer, when I started doing some barefoot walking for the first time in years, I was surprised to discover how much a lack of toe flexibility was limiting me. It interfered with quadrupedal movement in particular, but also all sorts of transitions to and from a standing position while barefoot.

quadrupedI’ve started working on toe flexibility. My main exercise so far is assuming quadruped position, and then—keeping my weight back on the balls of my feet—sinking my knees toward the ground. When I find the spot where my weight shifts forward onto the toes themselves, I ease off.

Along with that, I’m doing other foot mobility exercises: Lifting my toes individually, spreading my toes, relaxing my foot enough that it can conform around objects, etc.

Last summer I did quite a bit of barefoot walking, and was surprised and kind of sad to find that a few decades of wearing shoes seemed to have fused my feet into solid lumps.

Success will be when I can keep my weight back on the balls of my feet and still get into position for things like planks, push-ups, and lunges.

Hanging

Hanging from a bar or a branch is one of the things I got started on last winter, and then got distracted and wasn’t consistent about.

hangingLonger term, I want to be able to do pull-ups, but hanging is the place to start. I had worked up to hanging for 30 seconds last summer, but I did a bit of hanging yesterday and found that about 15 seconds was as long as I could manage. I’m ahead of where I started—a few years ago I wouldn’t have been able to support my weight with my hands; I’d have been afraid to even try, for fear that I’d hurt something. Still, not being able to hang for even 30 seconds is discouraging. (Not to mention life-threatening, if I find myself in an action movie.)

The progression is straightforward: hanging, then negative pull-ups (where you use a step to get up to the top of pull-up position, then lower yourself), then pull-ups. From what I’ve read, once you can do a 10 or 12 negative pull-ups, you can probably do a pull-up. We’ll see.

I don’t have a perfect situation for this: The benches in the fitness room here are too low to get me up to the top of pull-up position. I can probably use one or another of the pieces of playground equipment. I looked yesterday, but the most likely playground had kids playing at it, so I didn’t try.

Being able to do a pull-up is a key capability for various parkour moves, such as wall climbs.

Success will be a single pull-up in good form from a dead hang.

Wall Dip

This is where you put your hands on top of a wall and use them to push yourself up—like a push-up, but with your feet unsupported. I can currently do about one rep of this.

The progression for working up to these is just doing a wall support, where you hold yourself up in the top position.

I don’t know of a good wall for doing this exercise anywhere in Savoy, which seems odd. I wonder if architecture and construction fashions have changed—campus is full of low walls that are prefect for this sort of thing.

wall supportHappily, the edge of the window seat in my study is an adequate support, so there’s a spot to do this that’s literally less than one step away from where I’m sitting as I type this. It’s not a perfect spot, because it’s kind of low, so I have to bend my knees to get my feet off the ground, which means that I can’t use my feet against the wall to help. That’s fine for practice wall supports and wall dips, but it means that I don’t have a good place to transition my practice to more specific parkour skills like wall climbs.

Success will be when I can do a dozen or so wall dips with good form.

So, that’s my winter parkour-prep program. With some consistency, I should come into the spring with enough strength and flexibility to jump right into serious training on parkour-specific moves.

Just for completeness, here’s the article I mentioned at the beginning, with a set of basic exercises for building strength for parkour training. I almost didn’t link to it because I don’t like the title, but it’s really pretty good.

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You know this, right? Age-related diseases—at least, those of middle age—mostly aren’t. Rather, they’re lifestyle diseases that seem age-related because it takes years or decades for the harm done by the lifestyle to start showing up as symptoms.

I’m prompted to write this by something Charles Stross wrote over a year ago, where he talks about the symptoms of aging. I almost didn’t link to that post, because he’s really talking about something else—his post is about the political effects of reasonably foreseeable improvements in medicine—but along the way, he describes his current circumstance:

. . . chronic low-grade pain of the middle-aged body: joints that creak and pop, muscles that need an extra stretch, sore feet.

And goes on to compare it to his hypothetical world with science-fictional medicine:

Unlike today’s senior citizens, you don’t ache whenever you get out of bed, you’re physically fit, you don’t have cancer or heart disease or diabetes or Alzheimer’s, you aren’t deaf or blind or suffering from anosmia or peripheral neuropathy or other sensory impairments, and you’re physically able to enjoy your sex life.

Of course there are age-related diseases—Alzheimer’s and anosmia probably are. But especially the ones in the first quote—the age-related difficulties of the middle-aged body—aren’t age-related at all. To imagine that they are is to make a category mistake—and a serious one, because the error makes it much more difficult to recover your health.

I’ve hesitated to write this post, because I realize that I’m speaking from a position of privilege—I’m healthy. This is partially a matter of luck, partially a matter of good genes, partially a matter of a lifetime history of good health care, access to adequate nutrition, and so on.

Even so, I’ve got real first-hand experience with exactly the list of middle-aged body problems that Stross lists.

Eight or ten years ago, I was feeling old. Tasks that required strength were more daunting than they had been—especially ones, such as carrying things up or down steps, that added additional weight to my already excessive body weight. My balance wasn’t as good, making slippery tubs and icy sidewalks seem like serious threats. My plantar fasciitis was kept at bay only by being scrupulous about wearing supportive shoes and by limiting the amount of standing I did. I could still get down on the floor and get up again, but it was hard enough that I didn’t do it when I didn’t have to. I had trouble getting a good night’s sleep, because my back would ache when I lay still too long, and when I did sleep through the night I’d need considerable stretching before I could move normally the next morning.

I viewed all this as normal aging. Partially, I think that was because I was actually in pretty good shape. I could walk 5 or 6 miles. I routinely bicycled to work when the weather was nice. I went to the fitness center two or three times a week to use the weight machines and do some stretching. Despite all that, my physical capabilities were declining, and I didn’t see anything I could do about it, except perhaps spend even more time exercising, which didn’t seem practical for someone with a day job.

It wasn’t true, though. Over the past six or seven years, I have felt better each year. It is not a strain to carry things of ordinary weight, even going up and down stairs. My static balance is excellent—I no longer fear slippery tubs, although I do still try to be careful on ice. My feet don’t hurt when I stand a lot, even when I’m barefoot. I make a point of sitting on the floor, just to add some variety to the day. I sleep well, and I wake up able to move.

What did I do? Nothing extraordinary.

Starting to do tai chi was probably the key shift, because it changed so many things at once about my movement practice. Somewhere along the line I ran across parkour, and then even before I had done more than play with that I discovered natural movement as a thing—and that was what gave me a framework for thinking about movement the same way I’d come to think about food.

Trying to figure out the best diet is a waste of time. It’s computationally infeasible, and anyway unnecessary—just eat a wide variety of foods (and limit your consumption of industrially produced food-like substances) and your body takes care of the rest. (See Michael Pollan’s In Defense of Food for details.)

Similarly, trying to figure out the best exercise regime is a waste of time. You are far better off to get a wide variety of movement (and limit the time spent doing things like sitting in chairs and wearing shoes). Once again, your body will take care of the rest.

What struck me—what prompted me to write this post—was that Stross’s description of what his science-fictional medicine feels like is what I’ve felt like. It’s not exactly aging backwards, but it is a recovery of a feeling of ease and comfort that had slipped away under cover of “normal” aging.

My life feels kind of like a science fiction story, with the science-fictional medicine being just recovering normal patterns of movement.

It makes me want to advocate these lifestyle changes, perhaps more strongly than is advisable. As I say, I recognize that I’m writing from a position of health that isn’t available to just everyone. I can’t say that if you’ll just start walking and running and bicycling and lifting weights and doing taiji and experimenting with parkour and natural movement, you will reverse the aging process and feel young again. There are kinds of impairments that cannot be completely recovered from, and perhaps some that cannot even be improved.

And yet, I do advocate these lifestyle changes. Move better. Move more. Eat food. I bet you’ll feel better—especially if you’re starting to suffer from the symptoms of “normal” aging.

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There’s a downside to my plan to hit my movement goal every day in December that I had not considered.

As I discussed a few days ago, I was aware of some of the downsides of using an unbroken streak for motivation—that it can tempt one to continue a streak when doing so would be unhealthy, and that it can be terribly demotivating when it is finally broken.

This is different. It has to do with setting a target that’s a little aggressive, and then making it a minimum.

My current goal, as far as Google Fit is concerned, is 90 minutes of movement. The default was 60 minutes, but I bumped it up right away back when I was manually entering my taiji sessions. They’re typically an hour long, so one class put me over the top; the lower goal didn’t motivate me to move at all.

It’s not a very aggressive goal. Looking back at my history, I generally hit it more than half the time—about 4 days a week. Looking at it on a per-week basis, I do quite a bit better than that, totaling at least 7x my daily goal about 4 weeks out of 5.

Looking at it terms of miles rather than minutes, I walk between 20 and 25 miles almost every week, but I don’t do it by walking 3 miles per day. Rather, I walk 4 or 5 miles three or four times a week, and then one day I take a long walk in the 8–15 mile range. I think it’s healthier to have a mix of short, medium, and long days, and to include an occasional rest day when needed.

And that’s what’s been lacking so far this month. My goal isn’t so aggressive that I’m suffering from the lack of adequate rest days, but it’s aggressive enough that I’ve reduced my scope for including a really long day every week or two.

I suppose Google Fit could accommodate this a programmatically, through something like separate minimum and average goals, but that seems like an unnecessary complication. Probably better to just do what I was doing before this month, and aim to hit the target on average.

I wouldn’t want to continue this unbroken streak forever, but so far it is doing what it was supposed to do: encourage me to get a good amount of movement during the dark days of early winter.

Now that I’ve noticed this issue, I should be sure to get in a long walk soon. If I don’t go overboard, I should be able to take a long walk without needing so much rest that I can’t hit my minimum the next day. And if I can’t, well, the unbroken streak is a motivational tool, not an end in itself.

The photo above was taken at the University of Illinois Conservatory, which was a destination for our walk a couple of days ago. Here’s another, with Jackie.

Jackie in the Conservatory

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I have mixed feelings about using the motivating power of maintaining a streak.

Lots of people do it. Lots of writers write every day. Lots of runners run every day. There’s probably no virtuous activity out there that doesn’t have someone who has done it every day (or every week, or every year) for decades.

I understand the power. I feel it too, as I’ll describe in just a moment. But I have mixed feelings about it, primarily for two reasons.

First, it tempts people into doing things they shouldn’t just to maintain the streak.

Any runner who has run every day for years has almost certainly gone for a run even though he or she was sick. If it’s just a cold, that’s merely pointless. But going for a run with the flu is life-threatening.

Second, the demotivating power of a broken streak is huge.

For example, I had a streak going in the game Ingress, where there’s a badge for maintaining an unbroken streak of playing every day. I’d gotten my badges for 15-, 30-, and 60-day streaks. When my 180-day badge was due, I found that had apparently missed a day—my streak had ended at 172 days. I immediately abandoned any thought of getting that badge, and quit making any effort to play Ingress on a daily basis. I still play, but my current streak is 4 days.

Because of those issues, I try to be careful about motivating myself by trying to maintain a streak. I still do it though.

I went for a walk yesterday, only because I’m trying to get out for a walk every day this month.

After I hurt my knees in late October, my ability to walk was constrained for several weeks. It was very sad. I missed the last nice days for outdoor exercise, stuck inside resting my knees.

I find it easy to exercise in the summer, and hard in the winter. Every year I imagine that, if I can just keep going through the fall, I’ll preserve the habit and be able to keep going through the winter. It hasn’t worked very well in general, and certainly is out for this year, so I figured I’d do something different: Establish a new habit. I am perfectly capable of just deciding that I’ll get out and exercise in the winter in particular.

So I did decide that. Specifically, I decided that I’d try to meet the goal I’ve established in Google Fit, to get at least 90 minutes of movement every day.

Google Fit’s evaluation is just a bit odd. It’s central metric is minutes, but what it actually counts is steps, and I have no idea exactly how it translates occasional steps into minutes. It works very well when I go for a walk, but when I do taiji, for example, I get essentially no credit for having moved during that hour.

(As an aside, I should mention that I could just manually enter the hour or two I spend doing taiji. I did that for a while, but it isn’t really satisfactory. Among the great thing about Google Fit are that it’s simple and objective—there’s no need to do anything other than just carry my phone all the time, which I do anyway. Manually entering activity misses the whole point.)

Anyway, yesterday was a cold, wet, snowy day. Just the sort of day on which any sensible person would decide to simply stay inside. But I had this unbroken streak going, and a plan to hit 90 minutes of movement each day in December. So, I went out in the cold, wet snow and walked the remaining forty minutes or so to hit the mark.

Cold, wet, snowy day
Cold, wet, snowy day

During the summer, one can just stay in when the weather is bad, and still get plenty of exercise. Do that in the winter, and it’s all too easy to end up spending three months indoors. So, I am using the power of an unbroken streak to prevent that.

Another couple of weeks, and it will be a habit. A couple of weeks after that, and I’ll have met my movement goal for the month of December—and having gotten that far, I expect I’ll be able to move enough in January and February as well.

For now, though, I’ve just checked—and I see that I need another 24 minutes of walking today.

At least it’s not snowing.

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Me in the Snow
Me in the snow. Photo by Jackie Brewer.

Seven or eight years ago, I became aware of research that suggested that vitamin D deficiencies were a possible cause of seasonal depression. As I have long suffered (albeit mildly) from SAD, I figured it was worth trying a vitamin D supplement, and it did seem to help.

I worry just a bit about taking a supplement, because there are dangers with excessive doses of vitamin D. (A random site on the web suggests that doses over about 10,000 IU per day are dangerous, if continued for a period of months.)

So, I prefer to get my vitamin D via sunlight. A pale-skinned person like me can make upwards of 10,000 IU of vitamin D in just a few minutes of mid-day summer sun—but there’s no danger of getting an overdose: your skin keeps making it as long as you’re in the sun, but once saturated with an optimal amount, it starts un-making it as fast as it makes it.

But it’s the UVB light in the sun that makes the vitamin D, and at my latitude (I live at almost exactly 40° north), little or no UVB gets through the atmosphere during the winter. Specifically, the vitamin D window closed this year on November 20th. It’ll open again on January 20th—although of course it’ll be too cold to expose much skin to the sun for a month or two after that.

This past summer, I spent more time in the sun than in years past, and found that it made me feel especially good—like the opposite of seasonal depression. I imagine it’s the extra vitamin D, although I don’t see any way to tweeze evidence for that hypothesis out from the many other possible reasons. Perhaps it was just more bright light (as opposed to the UVB in particular)—surely the sun is the world’s best light box. Perhaps it was just being more active (I tend to get my sun walking or running, not sitting or lying in the sun). Perhaps it was the endocannabinoids produced during the longer runs in particular. Perhaps it was more time in nature (I spend a lot of my outdoor time walking or running in our local prairie and woods), which is known to be good for the mood. Perhaps it was the extra “together time” Jackie and I got on our very long walks. Perhaps it was the solitude of walks and runs by myself, providing space for meditation.

Whatever it was, I miss it in the winter, and I fixate on a vitamin D deficiency as a possible culprit. Maybe I’ll up my supplement dose. Of course, I won’t do just that. I’ll use my Happy Light™. I’ll go for long walks in the cold and snow. I’ll get out in the prairie and the woods. I’ll try to cover all the possibilities. But I’ll keep taking my vitamin D.