Mitochondria are the cellular energy generators that supply virtually all the power your body requires for a healthy life span. An abundance of published studies underscores the critical importance of the mitochondria to overall health, especially as we age. Energy-intensive organs like the heart and brain are dense with mitochondria. Until recently, the only natural ways for aging individuals to increase the number of mitochondria in their bodies were long-term calorie restriction or exhaustive physical activity - which are difficult or impractical for most people to implement. PGG offers a viable alternative.