Two years ago, the writer Steve Hendricks felt overweight, and he resolved to shed 20 pounds. His weight loss method might strike some as reckless: he fasted for over three weeks. Vanity, he writes, wasn't his only concern. He was informally testing theories which suggest that fasting can alleviate numerous maladies and symptoms and improve general health, much like exercise. Hendricks wrote about the benefits of an empty stomach for Harper's, and he joins Doug on Monday to talk about it.