Went on a really really easy run today, 4 miles at 8:20 pace, checked my average hr after and it was 171. Although it is very hot today 86° and humid, is my heart rate supposed to be that high. A couple weeks ago my hr for a run like that would have been sub 150 (around 55°) I then switched it off for a week then switched it back on today and it’s that high. The watch was tight on my wrist, should my heart rate be that high? Any idea how long it will take before it goes back down to its usual rate on runs?
Thanks