Hitting the Slopes

Have you ever felt that your willpower drop over the course of the day? It is true that Heart Rate Variability (HRV) has its own circadian rhythm which I call hitting the slopes. Here is two weeks worth of my HRV averages taken at four different times of the day:

Hitting the Slopes

The slope of the line connecting the four readings is the natural shape of energy that I have during the day. To increase willpower stamina and improve performance in my negotiations I want to see if there are ways to flatten the slope of that line without losing the high readings early in the day.

To understand which variables may extend the energy I have for negotiations I found a service called Whatify that helps set up and randomize conditions for testing. Now I can A/B test elements that may affect the slope of the day.

First I have to reduce Heart Rate Variability (HRV) to a single daily number and then test variables across that number. This one number is the slope of the readings. I derive that by making the X axis the hour of the day and the Y axis the rMSSD read at that time. I then use the SLOPE function in excel to derive the number.

The first variable I am going to test is exercise. Does 30 minutes of morning cardio change the slope of the line? Stay tuned and we find out using Whatify.

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2 thoughts on “Hitting the Slopes

  1. My rMSSD this morning was 11.30 (measured with a Polar H7), after a night of good sleep with clear REM phases and a relaxing week-end. Healthy diet, no alcohol, very moderate exercise yesterday. I am fit and thought have no inflammation. I am f#$ked!?!

    1. No, I don’t think one reading is enough to create alarm. I was in a really hot conference room one time and the high temperature of the room dropped my HRV to a very low level (reading right after in a cooler room showed a return to avg HRV). In my many, many readings I have had some weird ones and it is not uncommon to have an equipment fail. Keep taking readings and watch the trend. If you have 11.3 rMSSD on a sustained basis then you can start to investigate further. Every body is unique, so keep gathering data and watch the trends. Cheers

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