HRV should not be checked in the morning before training or racing, as it can be misleading; it is better to check it after the event.

“it's almost better for somebody else to look at it and tell you after well my girlfriend she had a really good method for a while uh especially in races she don't open uh in the morning she opened it after the the race so she checked uh after the race what was her heart rate variability in the morning not in the morning so she would not if it would be really low yeah it doesn't mess with and then would mess with the race”

“so I don't think it's telling us really the same thing and it doesn't have the same utility if for telling us from workout perspective what's the most appropriate thing for us to do uh might be a silly question but it occurred to me now as we were talking about this the one fundamental difference from one day to another in that morning check for me is there are some mornings I wake up and I have to pee so badly and there are some mornings when I don't and there's a part of me that's wondering is I'm laying there doing my test while needing to pee is that putting a little more sympathetic tone into this am I getting a skewed measurement would I be better off going peeing coming back waiting a few minutes”