Bending his body does come at a price. "For me, my body comes to expect a full-out stretch to feel good," he says. "So I'll go to the bathroom on the plane, close the door, and put my foot on the wall to stretch out so no one sees me. If I don't do that, my joints get all funky, and I can constrict and be in terrible pain. Once you start contortionism, it's best not to just suddenly stop."