Heart Rate Zone, Polar FT4
I have the Polar FT4 heart rate monitor and have a couple of questions about the heart rate zone. I'm 5'1" and 115-117 lbs (enter 117 in when setting it up). It has my heart rate zone between 120-160, is that based off my weight/height? Is it bad to not stay in that zone? Today i went for a 40 min run and was only in that…