
This is what your boy is doing...cheating ass...
Blood Doping - Blood Doping involves removing a pint or two of blood about two months before an important compe ion, then separating and keeping the red blood cells. The athlete naturally replenishes the blood in the intervening time, and then just before the compe ion the red blood cells are re-injected. An amplified number of red cells improves performance because more red blood cells can carry more oxygen to cells - increasing energy and durability. Using the athlete's own blood decreases the risk of contamination.
There is currently no test that can detect blood doping - even blood tests. There is on-going research in this area, and a test may be developed in the next five to ten years.