quote:Originally posted by Mimik:
Interesting. I'm in my late 30s and I find that if I push my heart rate up too high, ie 170-174 for a prolonged period of time, I actually feel worse and very tired and drained at the end of the run. The contrary is true at a lower heart rate. Maybe you are just fine at a higher heart rate-check it out with your doctor.
I don't maintain the higher rate for a long period of time; maybe 5-7 minutes.
However, I do have a scheduled check-up with my PCP in a couple of weeks. It's time to check my cholesterol, BP, etc. I will be sure to add this inquiry to my list.