I want to find out what it looks, feels, and tastes like to commit to the ultimate in dietary trade-offs: a lifetime lived as close to the brink of starvation as your body can stand, in exchange for the promise of a life span longer than any human has ever known. Julian Dibbell goes on the Calorie Restriction Diet for two months. CR may give you a longer life, but I'm not sure it's a life worth living.