1. First, put your feet away. Put your feet on the foam cotton. Make a 90-degree angle with the ground, and then lie down with your head back.

Secondly, when doing sit-ups, people should lie down, lower their center of gravity, cover their ears with their hands and get up slowly. You should tighten your abdominal muscles and pause for a while, but you should roll your abdomen and then slowly lower your body back to its original position.

3. Then, when the supine board is attached to the back, you can start the next cycle. When doing sit-ups, roll up your abdomen. Roll up the upper body to form an arc. If you feel tired, you can put your hand on your abdomen and help yourself get up slowly.

Matters needing attention

1. When doing sit-ups, you must relax and not be tight? Body.

2. The head does not need to lean on the supine board. Some people lie directly on the supine board, which is not right.

Remember, you must not move your cross when you do it, and the cross must be close to your supine board, otherwise you can't practice your abdomen.