From sports drinks to protein powders, compression therapy to cupping, there's a whole industry of products and services designed to help us adapt to and recover from exercise. But does any of it work? That's the question health journalist Christie Aschwanden set out to answer in her new book, 'Good to Go.' Also, former 'MythBusters' co-host Adam Savage spoke with 'Fresh Air' about working with kids in 'MythBusters Jr.' and a near-death experience he had in a car underwater.