Bill Sun, PhD A stressful email can tighten your muscles and accelerate your heartbeat within seconds. A walk through a quiet park can gradually change your breathing, mood and attention. These familiar experiences remind us that health does not exist only inside the body. The mind affects the body, the body affects the mind, and both are continually influenced by the environment in which we live. In the book Mind Reset: The Science of Total Weight Management, I described health and weight...