What is proper mewing?

Understanding Proper Mewing Technique

To practice mewing correctly, start by closing your mouth, ensuring that your lips are sealed and your teeth are in contact. Allow your tongue to relax completely. Then, position the main part of your tongue against the roof of your mouth, ensuring that the tip rests close to the back of your upper front teeth. Aim to maintain this position for as long as possible and incorporate this practice into your daily routine.