Category Archives: General health

Heat Acclimation and Blood Volume In Running

One of the subjects Jonathan Savage (the FellRNR running guy) discusses at length is heat acclimation training, where you train specifically in hot conditions to either prepare yourself to race in hot conditions or to successfully race in less extreme, even more normal temperatures.

This is of course amusing to me as we in Las Vegas (and most of the United States, admittedly) are currently suffering through a bout of extreme heat. And in Vegas, we’re used to high heat, with summer days topping 100° Fahrenheit (38° Celsius), but the 110-120°F heat we have now is even above our typical pay grade.

Thus, those of us who run in Vegas get to practice heat acclimation training whether we want to or not!

Of course, Savage refers mainly to winter training for a spring marathon. In the winter temperatures fall below freezing in most parts of the country. If eventually you have to run a marathon in 60-80°F weather (15-25°C), you’re going to get hit hard by relatively warm conditions, even though you’d love to have those conditions in the middle of August. Your body will have acclimated to the other extreme of those cold conditions.

On top of that, Savage typically runs ultra-marathons in more extreme conditions like the hot and dry Badwater 135 race. So he’s not just dealing with a slightly warm marathon in London or Boston. He’s dealing with potentially 100°F heat with doubly dehydrating dry conditions. So even if it’s negative celsius or fahrenheit outside he needs to bundle up to prepare for running in 100°F weather.

Now, all that said, just because you or I have no intention of attempting such a race coming out of winter doesn’t mean that heat acclimation isn’t valuable.

Even with no races on the horizon, running in summer heat and the resulting heat acclimation (within healthy reason: Don’t go taking extended runs once the temperatures are over 100° without an abundance of cooling resources and support)… has one additional key benefit.

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It’s Too Hot. What to do?

Right now in most of the United States it’s rather hot. Las Vegas is in one of their hotter periods, with temperatures typically exceeding 110 degrees Fahrenheit (43 Celsius) on the edge of town and hitting 120 degrees (49 Celsius) in the city center.

If you work a day job, you’re probably fortunate, as you probably spend most of the day indoors in air conditioning. Even if the A/C can’t get the room to an ideal temperature, your conditions feel a lot better than the heat outside or non-A/C indoor conditions. Your only issue is dealing with still-hot conditions after 4-5pm, or if you don’t have climate controlled sleeping conditions to deal with still-warm nightfall.

For everyone else, dealing with the extreme midday heat is a problem. I got to deal with the midday heat quite a bit thanks to a non-traditional work schedule. If you don’t have ideal A/C conditions, here are three things you can do to mitigate the effects.

  • Go to the gym in the middle of the day. Most gyms are well air conditioned, and while exercise will heat you up and make you sweat more… the conditions of the gym make this an ideal location to get some exercise in. Obviously, if you’re feeling worn out from the heat, you probably shouldn’t go all out in the gym. But I’ve found even when weary from midday hot weather, I can still get in a full strength workout. And I certainly take my time cooling down (in more ways than one!).
  • Cold water in the fridge, dosed every hour or so: If you don’t already, put a bottle of drinking water in your fridge. Every hour or so, or whenever the heat is rather unbearable, take it out and have a cup or so. You’re not just doing this to rehydrate after sweating and the heat, but you’re also slightly adjust the temperature in your body by introducing some cold liquid.
  • Take a nap. If you can manage to doze off in hot conditions, the mid-afternoon is a good time to take a bit of a nap and catch up on some extra sleep and recovery. I’m of course assuming you have nowhere to be and no pressing responsibilities. Obviously, don’t sleep through anything! But if you have most or all of the day to yourself, go ahead and try to sleep off these hot hours before things cool down a bit.
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Active recovery is better than full rest

Amazon.com : RELIFE REBUILD YOUR LIFE Exercise Bike Indoor Cycling ...
A much fancier version of what I exercised on today, while reading

Today for me was a rest day, and by rest I day I mean I ran a tick below 3 miles and rode the spin bike for 45 minutes before 10am. How relaxing!

Honestly though, I mentioned yesterday how I was going to resume daily running. That almost-3 miler went well, as I kept it super easy and got out there very early.

For the sessions on the spin bike at the gym, here is how intense I tend to do these: I usually bring a book, and read that book while I’m riding. I set the spin bike around level 3 (among the lowest levels) and maintain around 85-90 rpm. Not exactly hard work, though it’s a steady easy effort.

Today I read through an old standby I’ve read a few times: 80/20 Running by Matt Fitzgerald. I didn’t pound through pages, and I usually don’t on these spin bike sessions. I very carefully read through about 20 pages towards the beginning of the book. I’d stop reading frequently to look up and around the gym. It was about as intensive a task as the spin ride itself.

Something like this is only a workout in title. This is mostly an exercise in active lower body circulation, getting the legs to move and flush waste products while cycling in fresh blood and nutrients.

There is a hint of upper body isometric work throughout. To stay upright, I won’t just sit upright in the seat: It’s impractical to read a book this way during this kind of effort. Maintaining upper body alignment, I will brace on the handles using my hands or forearms, depending on position.

This while not exactly tiring does require a subtle bit of arm strength, and is probably beneficial for my arm development and recovery (they do already get quite a bit of more serious work in my 20 minute strength workouts).

You don’t want to make a constant habit of isometric exercise, as you can stunt range of motion and possibly generate stress fractures over time. But a bit at a light intensity every now and again can be helpful.

I’ll do these recovery spin bike sessions now and again, probably 1-2 every couple weeks or so. They can be clumped together in a week and then not happen again for a week. They can happen once in a while. I play by ear when they happen, or build them in when I know there’s a lot of other exercise behind it.

As I’m looking to stay more consistently active, this for now is a very easy way to get some work in when also trying to rest and recover. As I type this (about an hour later) I really don’t feel tired at all, and certainly not sore. I was as expected a bit stiff in the legs, but as always I did some stretching afterward and now they feel alright.

If needing a day off, you are often better off doing some sort of activity on a recovery day than sitting and doing nothing. Most people often do plenty of nothing already.

Obviously there are caveats. If you are injured or very sick, you typically should rest and do nothing. Barring that, you should at least take a 20+ minute walk. And, even if you don’t want to read, an extended session on a stationary bike is also a decent way to sneak in some aerobic exercise and fat burning.

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Garmin and the Challenge Carrots

One thing I’ve noticed more of from Garmin is that they’ve recently rolled out time-based challenge badges.

For example, you opt into a challenge to bike 300km in the month of August, or take 70K steps in the next week, 300K steps in August, run 40mi in two weeks, etc.

Perhaps they’ve always done this. Perhaps they’ve caught my eye more recently because the Coronavirus restrictions have taken away all live races and there’s nothing to train for. Maybe this is a new thing that Garmin’s social-engineered to keep users motivated in the short term.

In any case, last week I opted into the step badges, 70K in a week and 300K in August. I’ve recently averaged about 8000 steps a day, a far cry from the easy 16K or so I’d average daily in Chicago. And this 8K was an improvement over previous months, where average days were 3K-4K and I had several 2K days. Even recently, my rolling average would ebb and flow up and down as my overall activity ebbed and flowed.

But in trying to cut some more fat, I’ve decided to get more active with walking or running. Once the challenge badges came about, I figured the artificial goal of trying through the end of August for 10K steps a day by hook or by crook would spur some valuable extra calorie burn. This took me from sometimes trying sometimes not trying to hit a rolling automated steps goal to setting a hard baseline of 10K steps a day. It was like the first time I wore a Fitbit all over again.

A 2 mile morning walk or 2-3 mile run every day gets me about 5K-6K steps right away. Incidental walking at the office gets me a few more, and longer walks during breaks at work pad the totals until I finish a typical office day at over 9000 steps. At that point, incidental end-of-day walking at home gets me to 10K if I haven’t already hit the mark.

On weekends I take that walk or run, then go to the gym at some point during the day which adds a couple thousand more incidental steps (my gym has a large footprint and you need to do some walking to get around). If by work-at-home day’s end I’m short a couple thousand steps, I go for an evening twilight walk in the neighborhood, however long is needed to hit 10K (usually 10-20 minutes is enough).

My days off begin with a walk or run, and a variety of day-off activities usually logs a good deal of steps, not including another trip to the gym. I usually have no trouble getting to 10K on my days off.

I’m sure the overall net calorie-burning effect is minor, but the hamfisted goal has certainly helped me be more consistent about moving around every day. Previously I would let days get away from me due to work and other concerns and I’d finish with maybe 3K steps. This likely played some role in my not being able to burn fat as I slim back down. This keeps my metabolism on point, and now it’s just a matter of eating right.

Now I’ve decided to do the 40mi two-week run challenge, which will require a 2-3 mile run every day through August 29. I had jogged sporadically in the mornings, opting to walk most days. I want to see how doing those short runs everyday at 7am will affect me. Since there’s no races to train for, it’s not a big deal if it doesn’t work out or a setback forces me to bail on this. It’s a chance to see if easy everyday running for two weeks can work for me.

Plus, more importantly, running burns more calories per minute than walking, and will generate more muscle/mitochondrial benefit than just walking. I will ultimately be in better condition for it, and might even lose a few more pounds of fat in the process.

Will I keep up with the Garmin Challenges of the day/month/etc once this month is out? We’ll see. I always like to trial-run ideas like this, a la Steve Pavlina’s 30 day challenges. Once I finish it out at month’s end, maybe I’ll have gotten everything I wanted out of it and forget about it. Or maybe I’ll just keep taking the Challenge Carrots every week, every month, building up fitness through hitting artificial Garmin-badge milestones until a more serious challenge emerges.

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The Learning Power of Habit

One of the keys to exercise improving your fitness is that humans are creatures of habit.

You probably didn’t think much about using the bathroom or preparing coffee or breakfast this morning. Your process for doing any of the above has probably become automatic. You have formed habits that eliminate your need to expend mental energy undergoing any of those tasks.

This is also why projects and complicated tasks can be so mentally tiring. Our minds are just as capable of fatigue as our bodies. When we are not used to doing something to the point of habit, we have to mentally work harder to do it because we have to think through it.

This is one reason why my 20 minute workout is so much easier and faster for me to do than someone else’s 45-60 minute workout, and one reason why if you were to try it you would initially find it more difficult.

I have gotten so accustomed to the exercises I am doing for my separate workouts that I don’t need to put a ton of thought into it during the moment, nor is the challenge of lifting a heavy weight compounded by the relative muscle confusion of having to work through a new, different exercise. This is often what pushes a lot of people away from exercise after a few workouts.

But, is that not harmful, as some fitness experts would say? Won’t that lead to training stagnation from the monotony of the same workout every day?

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A note on peer reviewed studies

Many won’t give an idea credence unless a peer reviewed study exists that confirms it.

While this is fallacy, an appeal to authority, I am definitely not opposed to peer reviewed research. Quite the opposite. You’ve probably noticed that I’ve cited a variety of research sources in many of my pieces. I don’t make any of this stuff up. Often, when I perceive or find something to be true, I seek out research on the subject to learn more about what correlative evidence has been confirmed either way.

All of that said, I also worked in varying capacities in higher education for over 7 years, and much of that oversaw financial operations for sponsored research… actual, NSF/NIH/etc funded research. I not only reconciled expenses but also had to assist with the research reporting on those research projects.

So don’t take the following as a vilification of scientific research. I see for myself the value and process of that scientific research.

But it is worth noting that most of what we know about life hasn’t and probably won’t be scientifically researched and peer reviewed to officially stamp with approval.

To conduct peer reviewed research on a subject, any subject:

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Supplements I take, and why I take them

I went out this morning and had breakfast at the Coffee Cup in Boulder City, the first restaurant breakfast I’ve had since the lockdowns began in March. I got coffee and ran a few errands on the way back.

One of those errands included picking up a new bottle of the cal/mag citrate supplement I had run out of last night. I also picked up some L-theanine capsules to start supplementing with daily. I’m not one to add a new supplement to my current rotation unless there’s a very good reason to do so, so this was kind of a big deal.

I don’t take a ton of supplements, but I definitely take more than just a multivitamin, and I have good reasons for taking everything I do take. I’m going to spill a few blocks of text to talk about those supplements I do take.

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