1. It's a kind of nutritional supplement.
2. It can improve the aerobic metabolism of the muscle and greatly enhance muscle strength and endurance from diet alone.
3. It can be used as nutrition enhancer.
4. It's one of the most popular and effective nutritional supplements as well as the indispensable product for bodybuilders.
5. It is also widely used by other athletes, such as football players, basketball players and so on.