Variety equals longevity. It’s well established that regular exercise contributes to overall health and can reduce the risk  of  premature  death , defined as death before the age of 75. Recently, however, researchers at the Harvard T.H. Chan School of Public Health found an interesting link between a specific exercise strategy and longevity. It would seem the more types of movement you can muster, the less likely you are to die before your time. Publishing in BMJ Medicine last month, the team