What does nitric oxide have to do with nasal breathing?
Your sinuses make nitric oxide, and nasal breathing carries some of it to your lungs. What the small studies actually show, and where the claims go too far.
All articles
Everything we've published on mouth taping, nasal strips, nasal breathing and sleep, newest first.
Sleep
What is a home sleep apnea test, and what should you expect?
A home sleep apnea test is an overnight test you do in your own bed to check for sleep apnea. Who it suits, the sensors you wear, and what the results mean.
Nasal strips
What is nasal valve collapse, and can nasal strips help?
Nasal valve collapse is a narrowing at the front of the nose that makes breathing harder. How it's diagnosed, how strips and dilators can help, and when surgery comes up.
What to do if mouth tape makes you anxious or claustrophobic
Feeling panicky with mouth tape is a known side effect. Why it happens, how to ease into it with short daytime practice, and when it's better to stop for good.
What's the best bedroom temperature for sleep?
Most sleep experts suggest a cool bedroom, around 60 to 67 F. Why a cooler room helps you sleep, what heat does to deep sleep, and simple ways to cool down.
Which type of mouth tape is best?
Vertical strips, X-shapes, lip seals, porous and solid tape compared. What each type does, what the studies used, and how to pick one that's comfortable for you.
Sleep
Why alcohol makes snoring worse
Alcohol relaxes the muscles that hold your airway open and raises airway resistance in sleep. What the studies show and how long before bed to stop drinking.
Why do allergies feel worse at night? Bedroom changes that help
Allergy symptoms often peak overnight due to your body clock, lying down and allergens in bed. Bedroom changes for dust mites, pets and pollen that may help.
Why do I breathe through my mouth at night?
Most night-time mouth breathing comes from a blocked nose or a jaw that relaxes in sleep. The common causes, why it matters, and what you can try.
Why do I wake up at 3am? Common reasons
Waking at 3am often comes down to lighter sleep late in the night, plus alcohol, stress, noise or needing the toilet. Common causes and when to see a doctor.
Why do I wake up with a dry mouth?
Waking up with a dry mouth is often a sign you breathed through your mouth overnight. Other causes, when it can point to sleep apnea, and what to try.
Sleep
Why do I wake up with a headache?
Morning headaches can come from poor sleep, teeth grinding, alcohol or sleep apnea. What research links them to, signs to watch for, and when to see a doctor.