Snoring seems harmless, but it is a sign that your breathing is struggling.
When your mouth falls open, your jaw drops back and your throat narrows. The air trying to pass through vibrates against the soft tissue.
That is the sound you — or your partner — hear.
But behind that sound lies something bigger:
each vibration is a mini-interruption of your breathing.
Your brain receives less oxygen, your heart rate rises, and your body briefly wakes up each time to correct it.
If you breathe through your nose, the airway remains stable and relaxed. The air flows calmly, your breathing stays steady
and your brain gets the oxygen it needs again. That’s why you often notice a difference as soon as you learn to sleep with your mouth closed.