Practice isn't the only time learning happens. Research on offline learning shows that performance on certain tasks can improve after periods of rest or sleep, even without additional practice. The brain continues stabilizing and reorganizing...
The jaw joint sits extremely close to structures of the ear. That's one reason chewing, yawning, or moving the jaw can sometimes change sensations of pressure around the ears. Yawning can also help open the Eustachian tubes, which equalize...