a. Lie on your back on the bed. Support with shoulders, and hang your head outside the edge of the bed, then slowly lift and then fall, and repeat for 1 times.

B, don't move your shoulders, just stretch your neck forward as far as possible for 6 seconds, then slowly pull your chin down to your neck as far as possible, keep this action for 6 seconds, then relax and repeat it many times.

C, sticking out your tongue is an ideal way to keep the skin between the double chin and the neck loose, so as to prevent the formation of double chin and reduce the formation of double chin.

D, pushing your tongue against the teeth of your chin can also tighten the neck skin and reduce your double chin.