HRM Question

julesdeere
julesdeere Posts: 12 Member
edited January 12 in Fitness and Exercise
Just used my HRM for the first time (Polar FT7) during Insanity Cardio/Plyometrics. I was kind of amazed by how many calories it showed that I burned. If you enter your information correctly, these things are pretty accurate, right? Or could there be margins of error? Thanks :)
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