For free trial and subscribed Premium members, the Readiness score is based on wrong HRV statistics data, with this example showing it.
Symptoms description:
I noticed rather high Readiness scores, suggesting to explore the daily unrealistic limits, shown as 'Activity minutes'.
Possible cause, presented with data:
Based on this subjective feeling, I calculated the shown average HRV.
Skip the following math to the end of this report:
Shown average HRV = 79 = wrong
This is the result of the daily measured HRV's, part of these registered as 0 (zero), due to a failed accurate measurement (?). But the zeros are part of the average equation, resulting in a wrong average HRV.
120+97+106+142+0+0+0+111+114+74+109+99+0+111+107 = 1190.
Average HRV according to Fitbit = 79
Dubious calculation, as 79 = 1190 / 15 considering the zeros as measured zeros, HRV = 0 ms which is wrong. Only 11 out of 15 HRV measurements are valid:
The correct average HRV = 1190 / 11 = 108 ms.
I do not care about the HRV as such, but in this case the average HRV is used to calculate the Readiness score.
With this in mind, the Readiness is higher than expected, and suggesting a higher Activity each day. Because each day the measured HRV score is much higher than the (wrong calculated) average HRV, that includes zero results in the equation.
As a result, Fitbit suggests to let me (and you) sweat much more than we are capable of.
🙂 In my case: each day 70 Activity minutes suggested by the Readiness score is just too much to handle.
Attached pictures show what this is all about.
Any flaws in my calculation? Please comment and/or confirm.
Best Answer