I use a lot of supplements, vitamins to supplement my diet, pills to help my joints, pills to replace electrolytes and trace minerals. Ive always been against doping, accusing those who use them as falsely presenting themselves and thier ability, and making their amazing acheivements less amazing. I dont take EPO or anyting like that, but i feel without all these supplements, i wouldnt perform as well. does that mean they are PEDs, and im a cheater too (in spirit, not law, nothing i take is banned)? Where does it end then? Is a good diet considered a PED? My real question is about things like Optygen. It is marketed as significantly increasing VO2 max. It may be legal, but wouldnt it be against the spirit of competing naturally, and winning a race merely because of your talent and hard work? FYI, i do take optygen, and my HR during workouts is usually about 7-10 beats lower than normal at the same speed.