Friendship and fitness! How do celebrities like Reese Witherspoon, Cameron Diaz, and Nicole Richie stay in shape? By assuming downward dogs, hitting the pavement, and shedding those pounds -- together! Click through to see more stars and their workout buddies.
Jonathan Bennett and Kaley Cuoco
So much soul for these stars! The Mean Girls actor—who teaches spin!—and Big Bang Theory actress added resistance and stayed in the saddle for an intense class together. Eventually, the endorphins kicked in!
Credit: courtesy of Kaley Cuoco