I mean, first, almost all writers these days teach because they don't make enough money publishing to live on, to support themselves - people like Tobias Wolff, Anne Beattie, Amy Hempel, Stuart Dybek; a lot of short story writers, for one thing.
“I've talked to some drummers who seem to have a very hard time staying in shape on the road, including some drummers touring with high-profile acts that don't have to live on fast food every night.”