Although i sit totally calm, watch firm on my skin and pulse measurement is working, i often get no stress level measurement.
It just tells me that i have to check the watch position!?!?!
How can it measure my pulse but not the stress level - since that is basicall only the variance between the beats?
By the way.. no matter if i sit there totally relaxed for an hour or am in a hurry at the office, stress level always indicates around 50-70.
As far as i see, that feature is basically another random generator not working as advertised.
Can't count the disappointments with this watch & Garmin...