Rower: The key is to strengthen arm strength, latissimus dorsi and coordination. Elliptical machine: a kind of fitness equipment with smooth track and transverse slope, which allows users to conform to the whole body movement. Posture exercises muscle groups and increases the diversity and effectiveness of exercise. Zero resistance exercise can reduce the probability of muscle strain. Spinning bike: When exercising, like riding a bicycle, the key is to strengthen leg strength and enhance cardiovascular function. Exercise bike: The key is to exercise leg, waist, abdominal muscles and cardiopulmonary functions. Treadmill: The key is to exercise leg, hip, waist, abdominal muscles and cardiopulmonary functions. Waist beauty machine: it can relax and massage the waist and back. Comprehensive multifunctional instruments: usually including the functions of chest expander, pull-ups, sit-ups and other instruments. The key to chest expansion, pull-ups and supine pressing is to exercise upper limb strength and pectoralis major strength; Sit-ups, the key is to exercise the lumbar muscle group, so that the excess fat in the waist and abdomen is reduced. etc ......