Mouth taping may help reduce mouth breathing during sleep. Learn this practice's possible benefits and risks and what the evidence says.

Yawning is a mostly involuntary process of opening the mouth, breathing in deeply, and filling the lungs with air. While there’s no precise cause of yawning, it’s often viewed as a natural ...

Yawning is an involuntary action characterised by opening your mouth wide, taking a deep breath ... likely to "catch" yawns ...

Think of a cartoon character starting their day with a hyperbolically large yawn, complete with outstretched arms and a gaping mouth. State change isn’t the only known cause though. Research ...