

Hr sensor wrong
Hello everyone, I’ve recently bought my first Garmin ( forerunner 165).I’m currently training for my first marathon, I’m 19 years old and I’ve done half marathons before so I’m not new to running.
The first ever run with my Garmin was the first image, 15km, slow pace 5:30 and my Bpms were really high witch is weird because I wasn’t neither tired nor out of breath, so I did a second run even SLOWER, bpms through the roof so I decided to return it and get a new one, same model.
Went to try it today, I started walking and it marked 140 bpms, started running 180 bmps.
I don’t know what should I do more, when I go for a run i tight it very well , two fingers above my wrist bone. Anyone knows what’s happening?
u/ExplanationOld9085 — 2 days ago