Push-ups are the best way ... but if you don't do them, you will really rebound.

It's hard to stick to it ...

I suggest you stand here to eat, drink soup before meals, and don't sit after meals. ...

Take a walk! You don't need too much strenuous exercise.

I also have a small belly ... I'm trying ... but my waist is fine, just some meat in my lower abdomen.

You can try acupuncture. I succeeded ... I tried it for more than a month years ago, but I was too busy. . .