The Effects of Altitude Training on Hemoglobin Mass

It's not just blood that altitude is helping. The high concentration of red blood cells you have, therefore the more oxygen you have in your body to utilize essentially. So hemoglobin mass goes up, and match a crit goes up. And so that's all part of the deal you're making is you're going there for that benefit. Which is the same benefit obviously as using EPO as a doping product, except in this instance you'd go and altitude to earn it.