physiological aids

Question 1

what is blood doping?

Answer 1

blood is removed from an athlete, stored for 6-8 weeks, and then re-infused into the athlete from 1-7 days before competition
raises the blood’s oxygen-carrying capacity

Question 2

what is drug masking?

Answer 2

using certain drugs to mask or reduce the presence of banned substances
diluting the concentration of banned substances in the urine tested