The use of various fitness equipment is introduced. The use of the equipment sitting posture and shoulder pushing fitness equipment is to sit on the armchair of the equipment, so that the head and the whole back are always close to the backrest cushion, tighten the waist and abdomen, and hold out the chest. Hold the handle of the instrument with both hands. Concentrate the strength of deltoid muscle to push up the weight of load. Push up quickly during the movement, keep the elbow slightly flexed when reaching the apex, and stop 1 sec. Slowly lose weight and control your weight with the control of deltoid muscle. The use method of the instrument is that the body sits on the board in a state of holding out the chest and tightening the waist and abdomen, and holds the pull rod of the instrument with both hands, so that the shoulders are slowly lifted upwards and the pectoralis major muscles of the body are completely straightened. Concentrate the contraction force of latissimus dorsi, so that the pull rod can be pulled down to the chest, clavicle and nipple. Try to make the shoulder blades on both sides of the back close together and touch each other, so that the latissimus dorsi is at the peak position of contraction, and then slowly restore the pull rod to its original position. Sitting posture chest pusher body sits on the instrument chair, so that the head and the whole back are always close to the backrest cushion, tightening the waist and abdomen and chest. During the whole movement, push the arm upward with the contraction force of pectoralis major, stop for a while after reaching the peak contraction of pectoralis major, keep the elbow slightly flexed after pushing upward, and then slowly return to the starting position with the control force of pectoralis major. Sit on the instrument table, sit on the instrument side, hold your chest and abdomen, keep your chest close to the cushion, hold the instrument arm with both hands in the elbow flexion state, and put your forearm under the instrument arm. During the action, concentrate the force of the middle bundle of deltoid muscle to lift the instrument arm to the same plane as wrist, elbow and shoulder, pause for a moment, and then slowly return to the starting position. The body sitting on the chest clamp is placed on the instrument chair, so that the head and the whole back are always close to the backrest cushion, the waist and abdomen are tightened, and the chest is lifted. During the whole movement, the arms should be spread back as far as possible, and the elbow joint should be slightly flexed. Then the arm is clamped inward by the contraction force of pectoralis major, and finally the contraction of pectoralis major reaches its peak and then stops. Then use the control force of pectoralis major to slowly spread your arms to both sides. The use method of the sitting posture leg bending equipment is that the body is seated, the fixing equipment is installed, and the buttocks, waist and back are pressed on the cushion. Hold the fixed handle with both hands, put the calf and ankle on the instrument, and adjust the instrument to fix the leg. Under the action of contraction force of biceps femoris, it bends smoothly, and when the calf is lifted to the lowest position of the body, the biceps femoris is in the peak contraction position and pauses for a moment. Then, with the tension control of biceps femoris, slowly lower it and reset it. Sit and lift your legs Sit and lift your legs fitness equipment is to sit on your body, install fixing equipment, and use your hips, waist and back against the cushion. Hold the fixed handle with both hands, put the front part of the calf and ankle on the instrument, and hook the toes to fix the leg. Under the action of contraction force of quadriceps femoris, the quadriceps femoris is lifted smoothly, and when the calf is lifted to the highest position, the quadriceps femoris is in the peak contraction position and pauses for a moment. Then, with the tension control of quadriceps femoris, slowly lower it and reset it.