Practitioners of endurance sports must have the capacity to withstand strenuous physical exertion over long periods of time. The physical resistance of a sportsman or woman is a crucial factor to obtain good results. Several factors influence physical endurance, namely genetics, hydration levels, nutrition and the maximum oxygen intake capacity.
Of these four factors, only the last three can be manipulated by us, whereby the maximum oxygen intake capacity is directly related to the intensity and frequency of physical activity. Therefore, making sure the body receives enough water and nutrition is crucially important for improving the physical endurance of a sportsman or woman, and in turn his/her performance. A huge array of supplements has been developed to aid this physical conditioning process. They help an efficient use of oxygen, suitable levels of lactic acid and nitric oxide, supply energy for exercise and make for a more efficient use of this energy.