Is Exercising to Lose Weight a Myth?


Is Exercising to Lose Weight a Myth? Fanatic Studio/Getty Images
Is Exercising to Lose Weight a Myth? Fanatic Studio/Getty Images

Usain Bolt can scarf down 47,000 calories worth of chicken nuggets and look great, while some dieters work out 4 hours a day and never shed a pound. So is exercising to lose weight a big scam? And what does Calvin Coolidge's exercise horse have to do with it? Featuring Dr. Herman Pontzer.