SHR # 2490 :: Boundless: Upgrade Your Brain, Optimize Your Body, Defy Aging - Ben Greenfield - Few people have the credentials to write a book like this. His goal was selfish. He wanted a road-map. A single book that would provide a guide to optimizing the human body, mind, and spirit—written with no stone unturned, no fluff, no “watered down” drivel—just pure, hardcore, practical, from-the-trenches content. It didn't exist, so he wrote it himself.