Celeb Work Out

Stacy Keibler

Gina Carano

Jenny McCarthy

Fergie

Kim Kardashian

Jordan Caver

Britney Spears

Reese Witherspoon

Jessica Biel

Jennifer Aniston

Melanie Brown

Eva Longoria

Alessandra Ambrosio

Julianne Hough

Jennifer Lopez

Ashley Greene

Brooklyn Decker, Erin Andrews, Chrissy Teigen

Gisele Bunched

Marisa Miller

Pippa Middleton

Miranda Kerr

Cameron Diaz

Bar Rafaeli

Candice Swanepoel

Holly Madison

Paris Hilton

Rihanna

Sarah Tiefenthaler

Hayden Panettiere