I recollect a conversation a mechanic had with Lemond when Armstrong was crushing up the Alps. "The guy is on the juice...he's not suffering"
Armstrong was talking on his little radio in the middle of his attack up a steep climb.
What are some visual signs of doping?
1. No significant change in facial expression between slow and fast paces.
2. Not tired or short of breath after running a fast time.
3. Finer tuned body...(sprinters jacked up or distance runners extremely toned due to drugs that might enhance that effect).
4. Fast recovery between heats/races.
5. Heart-related issues: heart disease, stroke, and cerebral or pulmonary embolism