Around 20 minutes of walking can increase life span by three years. Moreover, residing in areas where there is safe walking and limited fast food joints can provide assistance to that effect. Nutrition plays an equally or even more important role; there is evidence that suggests a diet closer to whole food, plant-based is associated with increased life expectancy. For a 20 year old, it may translate to an extra ten years, whereas a 60 year old is likely to gain close to six.