Unfortunately, there is no one single lifestyle action which will ensure we stay healthy and fit. The human body—and the environment in which live—is far too complex for a simple panacea. However, we can inject a series of uncomplicated behaviors into our daily lifestyle in order to reduce our risk for life-shortening maladies. Here are some:
http://www.cooperinstitute.org/2016/07/29/decrease-your-cardiovascular-disease-risk-lifes-simple-7