VO2® arobic is an innovative energy supplement, designed for those who practice intermediate aerobic sport, that is between 30 and 60% of maximum oxygen consumption (vo2 max), so two different energy sources. During aerobic activity the sources of energy for the muscle are preferably guaranteed by fat and carbohydrate in an almost balanced way. Until today the sports nutrition has always little considered fats as an energy source, since they are little-performing and laborious to be taken in their most natural form, as oils. The digestion of a fat behaves well 3 hours of digestion. More recently, the introduction of specific fatty acids, the mcts (medium chain trigliceryds) that are simpler short-chain fats (6-12 carbon atoms), are attracting more and more interest and response in terms of results and performance. Unlike the other energy sources, fats produce 9 kcal per gram, so they are able to provide energy for a long time, only in a less brilliant way in terms of horsepower compared to sugars. Mcts are much more rapidly assimilated and usable fats than conventional lipids. Vo2® arobic also contains fructose and isomaltulose (palatinose®) *, sugars with low glycemic index which can ensure a stable and prolonged energy response. Beet juice, in addition to providing additional contribution of complex sugars, promotes the production of nitric oxide together with arginine akg and contributes to enrich the muscles of oxygen. Arginine and ornithine akg are amino acids that are characterized by a significant detoxifying activity, particularly towards the excess nitrogen produced during endurance activities. The vitamins of group b help to support the energy metabolism; folic acid and magnesium help reduce tiredness and fatigue; vitamin c and e contribute to the protection of cells from oxidative stress, which is important during an intense physical activity.