Sit-ups are common fitness exercises, which mainly exercise the muscles of the waist and abdomen. The preparation action is to lie on the floor, bend your knees to relax your back muscles and spine, straighten your legs together, and then lift your body, but your hips can't leave the ground, and your feet can't move or lift until your body is 90 degrees from the bottom, and then repeat. Now sit-ups generally require hands to hold your head, and your forehead touches your knees after getting up. There are also those whose arms swing straight up.

Sit-ups have a good effect on physical exercise, and their main functions are:

Increase the strength of abdominal muscles. During sit-ups, abdominal muscles exert more force. Long-term exercise is mainly to improve abdominal strength and make muscle groups more developed, which is one of the effective ways to exercise abdominal muscles. Combined with other aerobic exercises, it can play a role in losing weight and bodybuilding, while simple sit-ups can't consume fat better.

Can be beneficial to gastrointestinal movement. Sit-ups need to be combined with breathing methods, which can stimulate the peristalsis of the stomach during exercise, facilitate the discharge of excreta in the body, dredge the air in the stomach and prevent constipation well.

Can reduce the stomach and groin. Sit-ups are a very beneficial exercise for girls. They can stimulate groin, improve abdominal blood circulation, stretch northern muscles, alleviate gynecological problems to some extent, and enhance their immunity.

If done correctly, sit-ups can protect your back and improve your posture.

Sit-ups can treat gynecological diseases. Gynecological diseases are common diseases of women. Improper treatment can easily lead to infertility and even cancer. Women can exercise their groin by doing knees and sit-ups. There are many capillaries and acupoints in the groin. Do sit-ups to stimulate blood vessels and promote abdominal blood circulation, thus treating and relieving gynecological diseases.

Doing sit-ups can also stretch back muscles, ligaments and spine, which has a regulating effect on the central nervous system.

Sit-ups exercise perseverance. In fact, the amount of exercise for each sit-up is not very large, but it is not easy to keep exercising every day and maintain a certain exercise frequency.