“Physical exercise is one of the most potent ways of changing your genes; put simply, when you exercise, you literally exercise your genes. Aerobic exercise in particular not only turns on genes linked to longevity, but also targets the BDNF gene, the brain’s “growth hormone.” More specifically, aerobic exercise has been shown to increase BDNF, reverse memory decline in elderly humans, and actually increase growth of new brain cells in the brain’s memory center. Exercise”