Body fat percentage refers to the proportion of body fat weight in the whole body weight, also known as body fat percentage, which reflects the body fat content.
Abdominal muscle contact action:
Abdominal muscle movement:
1, sit-ups:
(1) Lie flat on the ground, put your calves on the bench, and use the strength of your abdominal muscles to make your upper body sit up straight. Don't stretch your head too far and touch your legs when doing the action, so your back will leave the ground and your hips will share the work that should be done by your abdominal muscles.
(2) When recovering, the shoulders slowly fall back to the ground, and the abdominal muscles are always tight. When doing this, many people like to put their hands behind their heads, but when sitting up, their hands just pull their heads forward, which is not helpful for practicing abdominal muscles. Putting your fist on your chest is different.
2. Cross your legs and sit-ups:
This is an advanced movement, which is also difficult, but you can practice your upper abdomen and lower abdomen at the same time. Lie on your back on the ground, with your right leg bent and raised, and your lower leg parallel to the ground. Then put your left foot on your right knee, gently hold your head with your hands, contract your abdominal muscles and lift your upper body. At the same time, raise your hips and start sitting. When recovering, don't touch the ground with your shoulders and lower your hips slowly, so that your abdominal muscles are always in a state of tension and contraction. Change your left leg after you finish, and do the same.
3. Reclining and sitting up:
Practice the external oblique muscle of abdomen. Lie on your back with your knees bent and put aside. The shoulder on the leg side extends horizontally. Open your fingers and hold the ground. Bend your elbow with your other arm and gently hold your head with your hand. When sitting up, don't rotate your torso and don't move your legs. The prone position outside the abdomen is completely tightened, and the shoulders should not touch the ground when recovering. And do the same thing on the other side.
Refer to the above? Baidu encyclopedia-body fat rate
Refer to the above? Baidu Encyclopedia-Abdominal Muscle Practice Tips