Mouth Breathing

Habitual breathing through the mouth instead of the nose, which degrades sleep, oral health, jaw structure, oxygen efficiency, and over years even facial development.

Why this habit matters

  • Appearance: In children causes long-face syndrome, recessed jaw, and crooked teeth; in adults causes chronic puffy under-eyes from poor sleep.
  • Physical_health: Reduces oxygen efficiency by ~18% (no nasal nitric oxide), worsens exercise performance, and degrades oral health.
  • Sleep: A primary cause of snoring, dry mouth at night, and obstructive sleep apnea, leading to chronic non-restorative sleep.

Related habits