What if the ability to look, feel, and perform at peak capacity wasn't the stuff of lore but instead was within easy reach? There are professional poker players, computer programmers, and race car drivers with optimised minds; athletes with optimised bodies; and monks and meditators with optimised spirits. But in a perfect world, you would be able to have it all: complete optimisation of mind, body, and spirit. In Boundless, health and fitness leader Ben Greenfield encores with offers a first-of-its-kind blueprint for total human optimisation.