People sit on sit-ups and exercise their upper body muscles and tighten their arm muscles by holding two drawstring bracelets at the same time.

Correct use of sit-ups fitness equipment;

1 First, put your feet on the foam. 90 degrees to the ground, and then lie on your back.

2, the head does not need to rely on the supine board, some people lie directly on the supine board, this method is wrong.

3. To do sit-ups, you need to lie down, move your center of gravity down, and put your hands on your ears. Get up slowly again.

You should tighten the abdominal muscles and pause, then slowly lower your body. When you reattach the supine board, you can start the next cycle, sit-ups, mainly abdomen reduction. Instead of lifting the waist, lifting the waist is not correct. It does not exercise abdominal muscles, but only iliopsoas muscles. Secondly, lifting the waist causes pressure on the lumbar spine, which is easy to cause injury. The correct way is to sit up and form an arc.