Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Physical fitness lovers are warned to beware muscle fatigue! Scientists have advanced that it is cruicial to warm-up properly before undertaking any kind of physical exercises. According to medical specialists, muscle fatigue can be the outcome of metabolic fatigue, nervous fatigue, muscle contraction caused by forced exercise, overworking and excessive physical efforts. To put it bluntly, the consumption of calcium can help in monitoring muscle contraction. Another cause of muscle fatigue is an improper diet. Indeed, the human body needs a balanced diet along with water and other types of fluids in order to perform positively. Otherwise, dehydration and improper food can lead to muscle fatigue. Ahead of all, muscle fatigue happens when the human muscles can hardly exert normal force and where the human body is found to use more effort than usual to achieve something...