The average heart rate today must be the lowest ever, still at a very slow pace, never mind this is what training is for.
Look at records from a year ago, I hardly could run. I didn’t use any electronic gadget to chart my heart rate last year. I used HRM watch, the right hand column shows the average rate for each run.
Nike+ 4.3k, time 31:06, pace 7:13, A/MHR = 149/162