In the three training years past, I think I’ve relied on heart rate a little too much to tell me what zone I’m in. This year, after reading your two new articles on breathing, I’m trying to pay more attention to breathing intensity. Unfortunately, my nose has never worked as well as it should and the docs tell me my nostrils are about 1/2 the diameter they should be. Can you recommend breath rates as an alternative indicator for the top of zone 1 and zone 2?
Dedicated Mouth Breather