Chewing bubble gum will increase the masseter muscle, which is counterproductive. Tips 1 Push your chin up with your palm.

Tips2 Use the bottom of the palm of your hand, starting from the middle of your chin, and push hard to both sides to your ears.

Tips3 Put your forefinger under your lips and push your thumb from the inside of your chin. Note: at this time, the lower jaw will feel a slight force push.

Tips4 put your fingers together from the middle position under your chin.

Tips5 thumb is fixed on the inside of the chin, and the index finger massages the slightly protruding muscles under the lips in a semicircle way to create a textured chin.