Coenzyme Q10 is essential in facilitating the process that provides cells - and therefore, your body - with energy. As we age, however, its levels begin to fall. Exercise can also raise levels of coenzyme Q10.Coenzyme Q10 (coQ10) is a small molecule present in mitochondria, where it helps combine oxygen with "fuel" from carbohydrates and fat to produce energy also known as ubiquinone.