In WHAT TO EAT WHEN, viewers discover how the food choices they make each day - and, most importantly, when they make them - can impact their health, energy, waistline, attitude and the way they age. Hosts Dr. Michael Roizen (chief wellness officer, Cleveland Clinic) and Dr. Michael Crupain (medical director, The Dr. Oz Show) demystify the intermittent fasting trend and offer science-based, easy-to-implement strategies about what to eat, and when, for optimal health.