My HRM might just have saved my life
I just got a polar FT7 2 weeks ago and have been using it everytime i workout. My maximum heart rate is about 165-170. Well last night, I was was doing Jillian`s 30 day shred level 2 (nothing unusual, not even one of her hardest videos) my watch would not stop beeping. My heart rate went up from 140 to 165 to 212 in a…
