First, hold down your stomach.
This method is very effective for lazy people. Don't exercise, just hold your stomach when you walk.
Second, dance.
This is very beneficial to women, not only can make your stomach smaller, but also can make your temperament better.
Third, touch your toes.
This action is very simple, similar to the principle of sit-ups, but simpler and more interesting than sit-ups.
Fourth, yoga.
Yoga is also very effective for reducing stomach. It can help you adjust your breathing, accelerate intestinal peristalsis, and make it easy for you to have a flat abdomen.