Preparation posture: Lie on your back on the floor, arms stretched out at your sides, palms facing down. Lift your legs over your hips and bend your knees at a 90-degree angle.

Action process: contract the abdominal muscles, lift the hips off the ground, and keep the knees close to the head. At the highest point of the action, pause for a moment, then keep control and slowly return to the starting position.

Point: When doing this action, it is easy to complete the action with the help of the inertia of the action, especially when you start to feel tired. Don't do that, always keep a slow and controlled pace, so as to get the best training effect.

Extended data

The benefits of exercise

1, physical exercise is conducive to the growth of human bones and muscles, enhance heart and lung function, improve the functional state of blood circulation system, respiratory system and digestive system, is conducive to human growth and development, improve disease resistance and enhance the adaptability of the body.

2. Reduce the chances of children suffering from heart disease, hypertension, diabetes and other diseases in adulthood.

3. Physical exercise is one of the most active and effective means to enhance physical fitness.

It can reduce your risk of premature aging.

5. Physical exercise can improve the regulation function of nervous system, improve the ability of nervous system to judge complex changes in human activities, and make coordinated, accurate and rapid responses in time; Make the human body adapt to the changes of the internal and external environment and maintain the normal life activities of the human body.

6. Physical exercise can adjust the physiological balance of human body and achieve the effect of treatment and prevention.

Reference Activities-Baidu Encyclopedia