If you lose face, you will naturally lose weight. If you have a waist, you should insist on doing sit-ups every day, slowly, 40-50 times a day. If you persist, the effect is very good. I have always insisted on doing it. I can do it about 90 times a minute. My waist is one foot eight and a half inches. My friends say my waist is very thin. I think it's all because of sit-ups, which are very effective.
I also have a personal secret trick, that is, wearing pants with waistbands, and your stomach is strangled. After eating, your stomach will get bigger, your belt will be tighter and you will feel uncomfortable, so it will indirectly help you control your appetite (I eat a lot, and my parents are not as good as me), but you can't let go of your belt just because you are uncomfortable, and then eat and tighten it, like this. In the past three years, my waist has not become thicker. Later, when I entered high school, I began to wear more skirts and my waistline jumped. This is the result of my own efforts. Personal experience.