Polar FT7 Resting HR?

cptkerowyn

I just got a Polar FT7 for Christmas. When I've tried to use it, it tells me my resting HR is anywhere between 90 and 110 bpm. I know this is wrong, it's closer to 70 - 75. I'm afraid this will mess up the estimate for the calories burned during my workout. Any suggestions on what I'm doing wrong and how I can get it to register my resting HR more accurately? Thanks!