We are designed as humans to breathe in and out of our nose most of the time during wakefulness and sleep. The nose performs many critical health functions, whereas the mouth serves no purpose in our daily breathing, except to act as a backup if the nose is congested, or during high intensity exercise (i.e. sprinting, jogging up a hill, etc.). With training, we can learn to breathe in and out through the nose during the day, whilst asleep and during sports up to a moderate in

This teaches you the correct tongue posture and why this is important for your health and craniofacial development.