Professional theory and practice. The knowledge of fitness private education courses is divided into two categories, one is professional knowledge, basic theory, and the other is professional skills and practical operation. The basic theories include sports physiology, sports planning, sports nutrition, sports rehabilitation, health and physical fitness evaluation, training principles and the formulation of training plans. Theoretical knowledge is the premise, the foundation and the most important thing to carry out various fitness exercises. Practical skills include resistance training, training methods of large muscle groups, aerobic exercise and the use of equipment and stretching training; There are also the rules and practices of fitness training for senior coaches, Pilates, Pilates for lying-in women, functional floor glue, functional training, extreme fat reduction and sports rehabilitation. Training for special people is also a must for fitness instructors.