Just like some people with big waistlines and small bellies I usually find, they all have one thing in common, that is, they don't exercise much. In other words, they usually sit and play with their mobile phones after dinner, or sleep in bed, only their stomachs will get bigger and bigger. Therefore, we can go out for a walk with friends after dinner at ordinary times to consume the energy in our stomachs and avoid overnutrition.
And you can also stick to some local exercises, such as hula hoop and sit-ups, which can consume some belly fat.