Hello ; Sorry in advance for my English, it’s not my mother tongue. If I said something wrong, say it to me. I have an issue with the heart rate monitor of my watch sport. At least I think. Yesterday I got my first workout, not bodybuilding but step (I’m not sure if it’s the name in English, but this is when you “dance” on a step), plus a crossfit. Each one during one hour. And the bpm it show me was completely crasy. Somme time it says 58 bpm except that I was in the middle of my workout, and sometimes it says nothing, just it was trying to read my bpm. So I change the location of it on my forearm, up and down, tighten it or loosen it. No change. Do you think it’s the way I wear it ? or it’s my watch who has a problem? Thank you beforehand.