On the eve of his 40th birthday, Rich Roll was in bad shape. His days were filled with work, stress, and junk food, and his nights were spent on the couch, remote in hand. Taking out the trash was the closest he came to exercise, and, at 50 pounds overweight, a walk up the stairs left him winded. He decided it was time to make a change. After undergoing a diet detox, adopting a vegan lifestyle, and pushing his fitness...