I am sitting in the sweltering Nevada heat watching a man struggle to lift a bar over his head. If the man manages to do it, he will win $250,000. The man is Boady Santavy — a two-time Olympic weight-lifting contestant from Canada — and he has muscles that look culled from the Marvel Cinematic Universe: massive, cartoonish arms that might as well belong to a superhero rather than a real human. Santavy is attempting to beat the world record for the men’s snatch — a lift of 183 kilograms, or approximately 403 pounds. After a tortured few seconds, Santavy drops the bar — an official “no lift” — and, with a look of animated dismay on his face, hobbles away, visibly cursing.…