A.J. Jacobs, bestselling author of The Know-It-All: One Man's Humble Quest to Become the Smartest Person in the World, The Year of Living Biblically: One Man's Humble Quest to Follow the Bible as Literally as Possible and the brand new Drop Dead Healthy: One Man's Humble Quest for Bodily Perfection stopped by this episode of Alison Rosen Is Your New Best Friend to chat about his latest book, wherein he spent two years trying every single diet and exercise method out there to achieve ultimate health.