Always change your sitting posture, get up and walk, and drink water.

Long-distance running, swimming, skipping rope, cycling and other sports.

The amount of exercise can be gradual: running, tennis, swimming, skipping,

And turn your waist with a hula hoop.

Actually, there is a better way for my cousin to tell me.

The screenshot below shows that it's okay for me to drop 20 yuan a month. Click on it to have a look.