I’ve decided to try exercising with a heart rate monitor (HRM) again. I first tried one of these way back in the early 2000s, before I even started this blog. Back then, Polar sold a chest electrode/transmitter strap paired with a LCD wristwatch that received the signal and displayed the heart rate. It was primitive by today’s standards, but worked pretty well. That model had a big design flaw, though — the strap had a non-replaceable battery, and once it died, the strap was worthless. Also, the transmitter was built in to the strap, and activated by moisture. As a result, unless the electrodes were bone dry, the battery would run down. The new design is much better. The model I have is the H10, and the transmitter snaps onto the strap, and has a replaceable battery. The big difference is that it no longer comes with a watch. Instead, it uses bluetooth to connect to your favorite device (phone, watch, gym equipment, etc) where you then run an app of your choice to receive and process the heart rate data. Polar has its own app for this called Polar Beat, but there are many others out there as well.

I mainly had running in mind when I got the H10, but I also plan to use it occasionally while biking. So far, I’ve used it three times: twice while running, and once while using my treadmill desk. The latter was mostly out of curiosity: I wanted to see how high my heart rate got while I walked along at 2 mph. Turns out it tops out at around 80bpm. For running, I’m evaluating 2 different apps: RunKeeper (which I’ve used for many years) and Polar Beat. The jury is still out, but I’m currently leaning towards Polar’s app, as it includes more features without a premium subscription (the premium features are unlocked when you pair a Polar HRM with the app). I’m going to run with it a few more times, and see what I like and dislike about it.

I do kind of miss having a wristwatch, as it’s kind of difficult to get a point-in-time heart rate reading from the phone, particularly this time of year, when I keep it underneath various layers to keep the battery from running down in the cold. It may be less of an issue once the weather warms up. I may go back to using an armband in warm weather. There’s also the Apple Watch, but I’m not sure I’d get enough use out of it to warrant the price. I’m sure I’ll figure something out after I’ve been using the HRM for awhile.

I used to be convinced that I had “weak ankles”. It seemed like every time I went hiking, I would twist my left ankle, usually while hiking downhill. Sometimes, all it would take would be a bump on the sidewalk. It got to the point where I thought my left ankle might be made out of rubber. My right ankle, being my dominant side, didn’t seem quite as prone to rolling, but it wasn’t immune, either.

In 2017, during a time when I was doing quite a bit of hiking, I developed a Morton’s neuroma on my right forefoot between the 3rd and 4th toes. I went through the usual bevy of podiatrists, cortisone shots, and orthotics (thankfully stopping short of surgery), before some internet research eventually led me to try minimalist footwear. Over the next year, I started wearing shoes with flexible soles, minimal cushioning, wide toe boxes, and no heel elevation. Now, I’m not going to lie and say that this was an easy change, but in the long term, it was a game-changer. The neuroma went away, my feet are stronger and healthier, my posture has improved, and I can stand for longer periods of time. But that wasn’t all: about a year later, I was hiking along one of my usual routes through Patapsco Valley State Park, when it occurred to me that I hadn’t twisted an ankle in a really long time. I thought about it some more, and couldn’t even remember the last time it had happened. It seemed that minimalist footwear had also cured my “weak ankles”.

There’s a scientific explanation as to why this happened. Think about a simple lever. A lever has two parts: a beam, and a pivot point, or fulcrum. The longer the beam, the less force is required to apply torque to the fulcrum. If you think of your foot as a beam and your ankle as a fulcrum, it follows that the higher the ankle is elevated off the ground, the easier it is to torque or twist. Minimalist footwear eliminates heel elevation, so the ankle is closer to the ground, and more force is then needed to twist or sprain the ankle. Most conventional hiking boots have about an inch of heel elevation, and you wouldn’t think eliminating that would make a huge difference, but trust me — it does.

So… if you think you have weak ankles, try minimalist footwear. You might be surprised.