Since I’m commuting on running shoes (a detailed lookback on this is coming…) I seem to be able to confirm a hunch I’ve been having for quite some time now.
My weekend long runs always start in the early hours (6-8 AM max) and it seemed my body always needed some waking up. It’s often that my heart rate/pace ratio only seem to normalize after about an hour of running. Often frustrating as it skews my training analysis, but I guess it’s part of the deal of doing long runs…
As I do the same run now often early in the morning and in the evening I can clearly see that my heart rate is a lot higher in the morning than it is in the evening.
You can see that the morning pace is slower and the heart rate always higher…
I don’t know whether this is due to ‘waking up’ or digesting (although I don’t always eat before my run) or hydration…
Googling the issue doesn’t really help much.
Most hits just babble about timing vs sleep etc.
So I guess I’ll just have to live with it. Although nothing life threatening nor really important, it can be frustrating at times (especially when I get out the door just in time ;-))
Does anyone have the same experience? Or maybe just the opposite experience?
Can you explain it?