[Jagat]

Maybe, unless there's a correlation (or inverse correlation) between smartness and those who must exercise for their job (vs those who don't).

Makes me think about the old question about those who have a higher paying mostly mental desk job. Is it because they're smarter (say through some genetic predisposition), or is it because of all the socioeconomic situations that led them to that job?

(Yes there are exceptions, like you, the one who's about to quote an anecdote. I'm talking about the majority)