When it comes to feeling pressured to be fit, Charlie once blamed Brad Pitt, saying, "F*cking Brad Pitt ruined it for everyone. After Fight Club, the expectation of what a dude is supposed to look like when he takes off his shirt is just so high."
As for that body, he doesn't have a trainer because he considers working out to be his time for himself.
His fitness routine involves a mix of running, swimming, hiking, and jiu-jitsu. Oh, and he also tries to make love "as often as he can."
Charlie also gave up fish for 18 months after getting really torn up over the End of the Line documentary, which is all about the effects of overfishing.