Besides playing tennis, here's what the Poland's world No.4 does to keep her body in shape:
Sit-ups, for sure. I like to do more than 300 in a single session. That makes my stomach rock hard. But when I do them, I'm thinking, "I wish this were over" or "Now I can eat more chocolate."
As I've read in Wikipedia, the most popular edition and biggest financial success of the Body Issue, featuring athletes in nude and semi-nude photographs, was the Serena Williams edition in 2009.