Then I recommend the following exercise that can be practiced at home-static exercise. Static exercise can mobilize more muscle fibers, so it has a good effect on enhancing absolute strength. Before static exercise, generally take a deep breath first, and exhale slowly during practice. The following is a static exercise method without instruments. 1. The neck (1) opens naturally, with fingers crossed behind the head. Press the head forward and down smoothly, giving the neck proper resistance to prevent the hand from pressing the head down. Keep this "stalemate" posture for 8 ~ 10 seconds or a little longer, and then relax. When you practice, you should hold your chest and abdomen, not bow your waist. (2) Put your right hand on the right side of your head, press your head to the left, and apply appropriate resistance to your neck to prevent your hand from pressing your head to the left. Keep this "stalemate" posture for 8 ~ 10 seconds or a little longer, and then relax. Practice in another direction. When practicing, the upper body should stand upright and not lean to one side. 2. Chest (1) push-ups are dynamic exercises. Here is a static push-up. Do push-ups When the body descends to the point where the chest will touch the ground, the pectoralis major muscles will be extremely tight. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. (2) Stand facing the wall and raise your arms horizontally in front of you, so that your fingertips will touch the wall but not the wall. The whole body is straight, the upper body leans forward, the palms are attached to the wall, and the fingertips are facing up. Bend your elbow, the upper arm and forearm form a 90-degree angle, and the upper body is forced close to the wall. Keep your arms bent to support your upper body, so as not to lean against the wall and make your pectoralis major extremely tense. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. 3. Open the door with your shoulders, stand in the door frame, hang your arms, clench your fists and face forward with your hands. Then his arms were separated to both sides, and he pressed the door frame with his fist, as if to open the door frame. The deltoid muscle is extremely tight. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. 4. Stand or sit with your back, hands akimbo, latissimus dorsi taut, open to both sides, keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. 5. Sit in front of the table with your arms (1), hold the lower edge of the table with both hands, and the upper arm and forearm form a 90-degree angle, as if to support the table. The biceps brachii is extremely tight. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. (2) Stand upright, naturally hang your arms at your sides, relax your fists with your hands clenched, and put your hands back. Raise your arms straight up to your back, and your upper body can lean forward slightly. Raise your arm until you can't lift it any more. Triceps brachii is very tight. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. (3) Standing or sitting, arms drooping, fists clenched with hands facing back. Try to bend your wrist and tighten your forearm muscles. Hold this static posture for 8 ~ 10 seconds or a little longer. Then relax. 6. The abdomen (1) is supine, the ankle is fixed, the upper body sits up, the angle between the upper body and the lower limbs is greater than 90 degrees, and the rectus abdominis is extremely tight. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. (2) Lying on your back, the lower limbs and upper body are inclined into a V shape at the same time, and the rectus abdominis is extremely tight. Keep this static posture for 8 ~ 10 seconds or a little longer, and then relax. 7. Squat your legs half (1), keep your thighs horizontal, keep your upper body perpendicular to the ground as far as possible, cross your arms on your chest, and keep your quadriceps extremely tight. Hold this position for 8 ~ 10 seconds or a little longer, and then relax. (2) Sitting posture: point the toes to the ground, raise the heel as high as possible, and tighten the triceps of the calf extremely. Hold this position for 8 ~ 10 seconds or a little longer, and then relax! ! !