After 19 years of running marathons and ultras, I thought I knew my zone 2 ranges. I decided to get a lactate test in a lab, figuring it would mostly confirm what I already knew. I was way off.
Read MoreAfter 19 years of running marathons and ultras, I thought I knew my zone 2 ranges. I decided to get a lactate test in a lab, figuring it would mostly confirm what I already knew. I was way off.
Read More