Sportsmen and women achieve extraordinary feats through hard work and natural talent. But some do use drugs to push the body further. How do the drugs work? Do they work? Is it possible to test for them? Chris Cooper explains the biochemistry, revealing how people cheat now, and how they might in fu...

Sportsmen and women achieve extraordinary feats through hard work and natural talent. But some do use drugs to push the body further. How do the drugs work? Do they work? Is it possible to test for them? Chris Cooper explains the biochemistry, revealing how people cheat now, and how they might in future.