I have another book to write up for the 48HCB, but my sister is currently reading it. She stole it while I was in the shower*.
Anyway, in the meantime, how's this for a classic Chris Crutcher line?:
Coach bases our capacity for pain on what he calls the principal of cardio bulimia. Simply put, that means we stop running when the third guy chucks up.
It's from his new (due out in September) book, Deadline. I'm a few chapters in and really liking it.
*See? Out of the huge pile of books on her coffee table, she HAD to read the one I was using. Beast.