Also known as supine scissor legs, it mainly trains rectus abdominis and adductor thigh muscles to promote the growth of the lower side of abdominal muscles.

Don't bend your waist when doing this action, because it will put too much stress on your waist, and keep your waist as close to the ground as possible.

Second, sit and bend your knees.

This action can help you stimulate the external oblique muscle and rectus abdominis, and the external oblique muscle is also an important factor in shaping the lower contour of abdominal muscles.

When doing this action, your knees don't have to be too close to your body to prevent bending over to compensate. If you practice too much, your coccyx will hurt.

Third, stand on your knees.

This action is very suitable for beginners. If you feel that your strength is not enough, but your body fat is low and you want to build muscle lines, you can try this action.

It is worth noting that your main action should be to lift your knees, not to turn your shoulders.

Fourth, hang a windmill and lift your legs.

Hanging windmills to lift legs is suitable for fitness enthusiasts with certain ability. Beginners may not be able to stand this action on their shoulders.

There is something wrong with this action, because it is not specially shot, so it is temporarily replaced. You need to keep your back straight, not as high as possible.