A lot of people assume that an addict’s real problem is just a lack of motivation. On one level, this is true, but what very few people recognize is that motivation is a function of brain signals, and that those signals depend on reliable messengers and intact nerve pathways. When we look at addiction as a neurological malfunction rather than as a moral failure, it suddenly takes on the form of something that can be fixed. It’s certainly not an easy task, but it’s a lot easier when we use exercise as a tool, one with great versatility.

