Tag: running

fitbit v3

Good news! My attempts with wearing the fitbit in reverse, i.e. with the sensor at the underside of my arm, were successful:

Chart showing heart rate as measured by Polar H10 vs fitbit alta HR

This time the fitbit alta HR and the Polar H10 agreed much more closely, even during an hour of running! It also correctly detected the drop in heart rate in the middle of my run when I stopped for a bit.

So while not accurate enough for serious heart rate tracking during exercise (for that I still recommend a chest strap like the Polar H10), the fitbit is definitely good enough for 24/7 monitoring and more …

fitbit v2

As promised in the previous post, I made another attempt at getting more accurate readings from the fitbit. The good news is that wearing it tighter does seem to improve the sensor readings. The bad news is that I'm not sure if this tightness is comfortable in the long run, we'll see.

The following was recorded while grocery shopping, cooking and eating Salmon Teriyaki bowls and some reading:

Chart showing heart rate as measured by Polar H10 vs fitbit alta HR

The two peaks in heart rate correspond to me walking to and from the grocery shop. Curiously the fitbit once again exaggerated my actual pulse; this time though there was definitely no …

Heart Rate Trackers

Recently I acquired one of the new fitbit alta HR bands, mainly because it promised to track my heart rate 24/7 without the need to wear any chest strap.

I always expected this to be less accurate than a chest strap, but how much less? I also happen to have a Polar H10 chest strap (which I use when running), so I decided to record with both for an extended period today.

The results are below (click for the full image):

Chart showing heart rate as measured by Polar H10 vs fitbit alta HR

The fitbit is in blue, the Polar strap in green. There are a few gaps in the data …

Working Out is like Investing

When investing, you are rewarded for taking risk by an increased rate of return.
When working out, you are rewarded for pushing to your limits and enduring the pain by increased muscle growth and strength.

Only risk that can't be diversified away results in a higher return.
Only pain that can't be avoided by warming up and stretching results in muscle growth.

Invest smart, diversify into low-fee index trackers.
Train smart, warm up and stretch after you are done.

Essential Running Stretches

  • Heel dip. Stand on a curb or a step with the tip of your feet, lower your heel as far as you can, hold for a few seconds, return to upright.

  • Touch your toes. Stand with legs straight, bend down as far as you can and try to touch your toes (or the floor).

  • 正座 (seiza). Kneel on the floor, then sit backwards onto your legs.

  • Leg pull. Alternative for above if the ground is rough. Stand on one leg, pull the back of the other to your bum and hold. Alternate legs.

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