Cameron Diaz Gets Buff

By Suzanne Zuckerman, with additional reporting by Linda Marx

UPDATED 03/07/2011 at 01:00 AM EST • Originally published 03/07/2011 at 01:00 AM EST

Her Changing Body

LOOK: A-ROD HAS A TYPE!

The baseball star, 35, is-as a source told New York's Daily News-"really into muscular women." So is a ripped bod a dating must for him? Says a PEOPLE source: "He would not date a woman for long who was not into fitness like he is."

Cynthia Rodriguez

A-Rod met his ex-wife at a Miami gym.

Madonna

"I choose men who like carved-out women," the singer-who was linked to A-Rod in 2008-told Elle.

Currently dating: Diaz (after working out with A-Rod Feb. 11) has called her love of exercise a "matter of survival."