Sit-ups are an effective way to exercise abdominal muscles. The correct way is to fix the thigh. For example, gyms or fitness equipment in parks and squares will have facilities for doing sit-ups. The standard practice is to put your hands on your head, get up and go down, but some people will want to practice the muscles near the waist, or they can contract their bodies sideways up and down. It should be noted that the left side may be symmetrical once, otherwise the muscles that are finally trained will be asymmetrical.

I remember when I took the sit-up exam in high school, I worked hard to get a good result, that is, I hit the mat with my back every time I came down, and this force made me more explosive. But in fact, this practice did great harm to my health, and my head trembled obviously when I was hit on my back, so I got a good result in the end. I did more than 50 times a minute, but I was too dizzy to stand up after I finished. If I try to do that every time, I'm afraid.

If the abdominal strength is insufficient, you can put your hands in front, and the weight of your hands is about ten pounds. If you reduce your strength by ten pounds, it will be easier. After the abdominal muscles are formed, you can gain weight by lifting barbells and the like.

Normal people can do about 40 sit-ups per minute. If you exercise abdominal muscles, each group can be limited to about 15. Don't use all your strength at once, because you can't build muscles. Usually you can do about five groups with an interval of about 30 seconds, so the first group may be easy, but the latter groups will become more and more difficult. As long as you persist, you can definitely develop a beautiful abdomen.