Running is the most natural exercise for a human being. When a small infant starts walking he tries to run as it is more natural for him. Due to the benefits of running millions of people all over the world are running and the numbers are constantly increasing. The advantages of running are enumerated below: Heart: The maximum benefits occur in the heart as the muscles of two ventricles which pump out blood become thicker and both the interiors of these chambers become larger in size by 20 percent. This enables both the ventricles to pump out more blood with