I wrote before that my normal heart rates on the slow running I do (14:00 or slower pace) usually around a 105 average with a max around 120. I have confirmed that using a chest strap at times. Today, my run was normal - a 14:06 pace but the average heart rate was shown as 73 average and 94 max. Now, I am not worried about this unless I wear a chest strap and get the same result, but I wonder if others just get a bad day with their watch. I wore it on my wrist in the same location with the same degree of tightness as usual.
So, do others get a bad day at times that is way off heart rate wise from the usual? Attached are screenshots showing my hr is moving around a lot more than my pace and the other showing how low it was.
