Mitochondria live inside nearly every cell in your body, and they perform one of the most important jobs there is. They convert the nutrients in the food you eat and the oxygen you breathe into usable energy. If your mitochondria aren’t well supported, energy production may start to slide. In fact, researchers now believe that mitochondrial health plays a significant role in how we age. Current thinking is that how well you care for these microscopic energy factories may, to a significant extent, determine whether you stay vibrant and energized with the passing of the years or start feeling like an elder long before your time.