This is the application of scientific principles and techniques for the improvement of the sporting performances. The discipline studies human movements in all contexts. Studies in science and sport have enabled a clearer understanding on the various reactions of the body to training and exercise. Sports science involves studies in nutrition, diet, sports and technology. These studies have revealed the importance of physical exercise to the proper functioning of the body. Nutrition studies have enabled the recognition of the importance of eating a balanced diet in order to replenish body tissues, which are worn out during exercise. This enables sports people avoid muscle depletion, which can have devastating effects on their health. Most researchers in this field have reserved their works in the form of free essays, which are available in most libraries.