I am confused.
Either way: Ran 30 minutes tonight. The first 20 minutes had all out sprints for a minute, every third minute (for a total of six intervals completed between my normal pace).
Heartrate after the sixth minute into the workout I averaged a 164-166 heart rate.
The first 30 seconds after running (while walking through a cool-down) it dropped to 144 and by the 5th minute of walking was down to 94.
I need to read more on this. I am not getting it.