When asking doctors what comes as the single most important thing one can do for self as far as maintaining good health throughout a lifetime, the definite answer is exercise. In 2012 PLOS Medicine published a study that included 600,000 people showing 2.5 hours of just moderate exercise in a week increased their life expectancy by 3.5 years.
What Exercise Does
Exercise reduces the progression of type 2 diabetes by more than half and for some people reverses it. Sport exercise is one of the best preventatives against high blood pressure, heart disease, and high cholesterol. It also boosts the immune system. For the brain, it reduces dementia and Alzheimer, and it lessens depression.