Because it looks beautiful, and abdominal muscles are the standard that can directly reflect whether a person's body is really healthy. Like muscles in other places, others are invisible, and only the abdominal muscles are intuitive.

If you go to the gym, you will find that those who look thin but feel strong have abdominal muscles, because in the process of exercising abdominal muscles, people's physical exertion is the greatest. After a long time, people will become thinner, but not the kind who can't eat fat, but a kind of strong thin, and thin people don't look weak and windless. Such a person is really beautiful.

Think about that fat man's figure. He must be ugly. Even if the fat man's arms and thighs are thick and big, he really has no abdominal muscles. Therefore, being fat is really just a lot of meat. I have never seen a fat man with abdominal muscles.

Just like the star Mabel Yuan, she was annoyed by the so-called vest line and abdominal muscles. Think about how much perseverance a girl needs to exercise her abdominal muscles. Besides, you can see Mabel Yuan's figure, which is the best among actresses. Besides, she has a really good figure. If you don't believe me, you can look for pictures on the Internet and see for yourself.