It's summer, and stars are working out hard to stay in shape!

Matthew McConaughey worked on his "Magic Mike" body by running in New York City.

Two other stars getting their cardio on in the Big Apple? Claire Danes and Joe Jonas. Let's hope they stayed hydrated in this record heat!

Find out which pop star bikes and which R&B hunk has a super ripped body.

media_removed_toofab 2013

Hot Videos