If there were a treatment that cost nothing, had no harmful side effects, and could improve nearly every part of your health — would you use it? Good news: it already exists. It’s
physical exercise.Heart disease remains the leading cause of death in the United States, but many of its major risk factors — diabetes, high blood pressure, high cholesterol, obesity, inactivity, smoking, and stress — can all be improved with regular movement. Exercise is one of the few things proven to positively affect every one of them.