My polar Ft7 fat zone number keeps moving up working out

richh963

My fat zone is center is like 109 below that number is suppose to be working in fat zone and above that number is areobic, but as im working out that half way number keeps getting higher. Im a heart patient and cant go full tilt but i would like to reach the top of fat burn and enter the cardio burn, but with a moving target its like were is the half way point. those with ft7 please enlighten me if i have something setup wrong or is this normal.

Mokey41

Forget about the zones, it's more of a marketing gimmick than anything. Workout at the level that you're allowed to. The beginning of my fat burn zone is 109 going to 142 so I'm not sure why yours is below 109. 109 is barely a fast walk for me so staying under it would be just living.