Can you lose weight by doing sit-ups? How much should be done at one time?

It can reduce the fat on the abdomen. The specific exercises can be done separately. Divide into three groups every day, with 30-50 exercises in one group.

The correct way to do sit-ups:

1. Bend your legs at the knees, lie on the ground, with your left and right feet slightly apart, with a stride as wide as your shoulders, hips, lower back, The back, shoulder blades, and shoulders are all in contact with the ground. Bend your arms at the elbows, place your hands under your head, and press your elbows as low as possible toward the ground to fully open your chest.

2. In this lying position, raise your head slightly, lift the upper part of your back off the ground, stretch the muscles between the shoulder blades, and tighten your chin downward at the same time, looking towards On your abdomen, hold this off-the-ground position for 4 seconds, then lie down again and repeat 2 times.

3. The upper part of the back is off the ground. Maintain this posture, then release the hands on the back of the head, and straighten the right arm diagonally upward. The angle with the ground is about 45 degrees. Put your left arm down and straighten it beside your left side. Be careful not to touch the ground and keep it parallel to the ground.

4. Keep your head and shoulders lifted off the ground. At this time, swing your left arm up to maintain an angle of 45 degrees with the ground, while swing your right arm down without touching the ground. , parallel to the ground, swing your arms alternately 4 times back and forth.

5. Stretch your arms upward at the same time to expand the angle with the ground to 60 degrees. Straighten your legs and raise them directly above. The soles of your feet face the ceiling so that your legs are perpendicular to the ground and your back is Still keeping your head off the ground, maintain the position for 4 seconds.

6. Bend the knees with the raised legs and lower the calves so that the thighs and calves form a 90-degree right angle. Do not change the posture of the thighs. Retract the arms, bend the elbows and hold the back of the head. Open the chest and remember to tuck in the chin. , eyes falling on the abdomen.

7. Bend the knees and raise the legs. At this time, the calves are crossed with each other. First, the right calf is on top. Hold for 4 seconds. During this period, the upper body should be balanced and the posture of the back and head off the ground remains unchanged. , be careful not to close your arms and open your chest.