Do at least two groups every day. How hard do you push?
Feel the pain in your mouth and cheek muscles, just push hard.
(1) Like blowing bubbles, try to bulge your mouth and hold on for 10 second; Try to pucker up again and hold on for 10 second; Repeat 10 times.
② Mouth slightly opened, jaw moved left and right, repeated 30 times; Stick to it 2-3 times a day.
3 Look up at the sky, open your mouth and send it up with the tip of your tongue 10 second;
Then retract your tongue, close your mouth, slowly lower your head, and repeat 10 times.