1. Stick out your tongue: stand up straight, shoulder-length, with your back straight, slowly raise your head to the maximum, extend your tongue upward as far as possible, and tighten your chin for 5 seconds, then slowly restore your head to its original position, and at the same time try to extend your tongue downward for 5 seconds, doing it about 30 times a day.
2. Swing your chin: stand up straight, slowly lift your head back to the maximum, then swing your chin gently, and keep doing it about 15 times a day.
3. Tilt your head left and right: stand up straight, tilt your head to the left for 5 seconds, then slowly tilt it to the right for 5 seconds, and do it about 15 times a day.
4. Stretching the neck back and forth: stand up straight, slowly lift your head back to the maximum, and then slowly lower your head forward to the maximum, and do it about 15 times a day.
5. Massage the neck: press the neck with both hands and fingers and rub it up and down for about 20 times each time.
6. Lengthening the double chin: gently lengthen the chin line with your fingertips and do it about 10 times a day.
These are some ways to eliminate double chins and create perfect chin lines. It should be noted that you have to keep practicing to see the effect. At the same time, we should also pay attention to diet and exercise and maintain a healthy lifestyle. Everyone's physical condition is different, so it's best to consult a doctor or a professional before starting any new exercise or healthy lifestyle.