What exists is reasonable. The main function of sit-ups is to adjust the angle between the human body and the ground, and to change supine sit-ups into downward inclined sit-ups, thus strengthening the stimulation to the abdomen. However, I almost never use sit-ups, because there are too many ways to enhance stimulation, and sit-ups are just the tip of the iceberg. The difference between supine sit-ups and downward inclined sit-ups lies in the different stress on the abdomen in the same posture, and downward inclination will be more laborious. Others are no different. As I said before, there are many ways to strengthen abdominal stimulation, such as stimulating the upper and lower abdomen with compound movements, loading, increasing the amount and slowing down. Moreover, not many people have the capital to do push-ups People who love sports and fitness can't be idle even when they are resting. I still remember the "bed welfare" of students in the lower berth of university dormitory-sit-ups (upper berth is not allowed because of the noise). Like push-ups, sit-ups are so popular, but is the correct practice of sit-ups standardized? The following is a systematic and comprehensive introduction to the correct practice of sit-ups.

1. Sit on the sit-up board, lie down along the board, and hold your shoulders with your hands (don't hold the back of your head, it's easy to strain your cervical spine).

2. Get up and make an angle of 60-75 degrees with the ground, and keep an angle of 30 degrees with the ground when leaning back, without going to the finish line; Exhale when you get up and inhale when you lean back.

3. Do 4-5 groups every day, each group 15-20.

4. Auxiliary exercise method: bend the waist downward, keep your legs upright, and hang your arms and head. Don't force yourself to touch the bottom, try to relax your muscles, then naturally stretch your back and leg muscles, pause for about one minute, and repeat for three times.

5. Master the correct sit-ups, and the more standardized fitness movements will get more obvious fitness and slimming effects.