Erythropoietin (EPO) is a hormone produced by the kidney that promotes and stimulates the formation of red blood cells by the bone marrow. The resulting rise in red cells increases the oxygen-carrying capacity of the blood. We as people need oxygen. We as athletes (yes, I still considered myself an athlete, though I manage to run only 20 miles per week) need a lot of … [Read more...] about EPO for development…Does it work? Is it legal?