The best activities for your health are pumping and humping.

The line is a deliberately provocative, jokey reduction of “healthy living” to two vigorous physical activities: weight training (“pumping,” i.e., pumping iron) and sex (“humping”). It plays on Schwarzenegger’s public identity as a bodybuilder and his long-standing use of bawdy humor in interviews, using shock value to make a simple point: regular physical exertion is beneficial. The phrasing also reflects a macho, locker-room style of motivation common in some fitness subcultures, where humor and bravado are used to encourage exercise adherence and celebrate physical vitality.