Exercise is a paradox: everyone knows it is healthy, but most of us struggle to do it. Further, as technology and machines increasingly replace human labor, fewer people are getting enough exercise. In this talk, Daniel Lieberman will explain how an evolutionary and anthropological perspective on exercise can help. How much exercise did we evolve to do? Is exercise really a magic bullet? Why, how, and to what extent does exercise slow aging and promote health? Is there a best way to exercise? And, most importantly, how can we help each other exercise without nagging or coercing?