There is a very convenient trick, that is, when walking, you must hold your chest out and abdomen in, especially abdomen in. I have tried to consciously remind myself that I must hold my abdomen before walking every day for a month, and I must remind myself repeatedly, because this is particularly easy to forget, always forgetting when walking, or remembering when I am in the dormitory, forgetting as soon as I go out, and then never remembering it again.
You can ask your partner to remind you at any time, and then slowly form a habit. Abdominal contraction while walking can make muscles firmer and lose weight.
Second, pay attention to your eating habits and don't lose weight by dieting. If you can stick to dieting and lose weight, you can really lose weight quickly. However, dieting has sequelae, which will make your skin worse. After all, you have reduced the content of many things necessary for your body, which will not only make your skin worse, but also make your lower abdomen skin loose and not tight at all. This is easy to understand, that is, your belly fat is actively consumed.
The third is to do some full-body exercise. Weight loss exercises are basically full-body exercises, and there are few parts to lose weight. Many sports are "implicated" in the lower abdomen, which can reduce the fat in the lower abdomen, lift loose skin, make the abdomen firmer and more beautiful.