Many people live in fear of one day developing heart disease, an autoimmune disease, cancer, Type II diabetes, or Alzheimer’s, assuming all the while that one’s chances for developing such a condition are purely a matter of bad luck and bad genetics. They assume their only option is to cross their fingers, hope they don’t get sick, and rely on health insurance if/when a dreaded diagnosis comes. The good news is that this genetic-determinism model is wrong (or at least incomplete). The truth is that we can influence which genes get turned on or off by changing how you eat, sleep, and move.