I'm uncertain as to how much I should trust these scores.
Today my watch says that I have a low stress level of 18; but I threw on the chest strap and did an HRV stress test and got a "High" result, did a second test and it said "moderately high," did a third test and it said "very high." All three tests were done basically one after the other.
So having a stress level at low, which I understand to be based on HRV calculations from the optical sensor; followed by 3 back to back HRV tests with the chest strap yielding significantly different results has me thinking that either the measurements have no practical value or there is something wrong with my watch.
Any thoughts on how to interpret this?