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.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Why Are We So Obsessed with Time Capsules?
42:06

Why Do Kids Play Recorders in School?
20:18

How Have Rats Outsmarted Us for So Long?
40:28