(1 of 8) Celebs Get PhysicalThese celebrities exercise their right to bare arms—toned arms that is. And breaking a sweat never looked so good. Glam shows you our favorite hard-bodied hotties getting lean, built, and beach-ready buff. Reese Witherspoon Witherspoon goes incognito jogging with her big black shades and Puma hat in Brentwood on March 12.