There are a large number of people in favor of it, who report practicing this technique with great benefit
Mewing involves lifting the tongue towards the palate and maintaining that position with the lips and teeth closed, in order to define the jawline.
This term comes from the surname of British doctors John Mew and his son Mike Mew, who developed this technique.
These doctors practice orthotropics, which involves altering the jawline and facial shape through exercises and facial and oral postures.
Move the jaw until the lower front teeth are just behind the upper front teeth.
It is recommended and in which ones it is not, since many times by doing something good, it is possible to make a permanent mistake and affect your body.