Prolonging your life span. Aerobic exercises increase the demand for oxygen, therefore resulting in marked temporary increase respiration and heart rate. Proven to be the best method in prolonging mortality. Involves pushing your heart rate to 70% to 80% of it's maximum and keeping it there for 20 to 60 minutes at a time. Doing this 3 to times a week can def increase your life-span and creating a more optimal body all around. Check out more with Camerons Fitness-opt.