I recently lost my Scosche heart rate monitor and instead of replacing it I have been trying to use the monitor in the watch. It seems to work well enough when I'm sitting around but on a treadmill not so much. I have been trying to keep my heart rate at a particular rate for base building by varying my pace, but I'm finding that the reported rare jumps around quite a bit. If I put my hands on the treadmills heart rate sensors sometimes they match but they are often different by 15bpm. I know the treadmill can be off too. But the real issue is that the F5+ number will seem to sometimes jump around from say 128 to 135, or get stuck at a number like 135 when I can feel that it should be much lower.
Has anyone else seen this? Any tricks to make it work better? I wear it tightly on my wrist just above that bone that sticks out. My wrists are not big, which may be the problem.
