Hi, when I had a F3HR the stress test showed value 50-90 points , but when I switched to F5 it shows 1-13 points. It is very strange because I don't fell excellent - I use it since 8 days .
Does anybody know why there is so huge difference?
In my tests (4 till now) I always got the value "1". It's impossible!
Software version: Beta 2.9
I'm using 5x and HRM run (the older one) and it seems that I get only valid reading if I put water on the band before test.