The two-minute nose test

Why nose breathing matters at night

Your nose is the airway your body prefers. It warms and moistens the air you breathe in and filters it on the way, and people normally breathe through it both during the day and while they sleep. Researchers who studied mouth taping also point out that during sleep, air meets less resistance going through the nose than through the mouth, which is one reason most people breathe through the mouth less once they fall asleep.

When something gets in the way, the body switches to the mouth. A cold, allergies, a deviated septum, nasal polyps and swollen tissue inside the nose can all make nose breathing hard enough that you breathe through your mouth instead. Waking up with a dry mouth or bad breath, or finding drool on your pillow, can be a clue that this is happening at night.

Mouth tape works by keeping your lips together so the air takes the nasal route. That's a good fit for people whose noses are clear, and a poor one for people whose noses aren't. A 2025 systematic review of the mouth taping research noted that many of the studies excluded anyone with nasal obstruction, and that some authors warned of a risk of asphyxiation when the nose is blocked. So the test checks your nose first and asks about warning signs second.

What your result means and what to do next

The test can give you one of four results. If you tick any of the four boxes in the second step, you'll get the “talk to a doctor” result, whatever you said about how the two minutes felt. Otherwise your result depends on how the nose breathing went.

You're a good candidate to try mouth tape

Nose breathing felt easy and none of the warning signs apply to you. That matches the people in many of the mouth taping studies, which left out anyone with a blocked nose. Your next step is to start slowly, which the section further down explains.

You can try it, ideally with a nasal strip

You managed the full two minutes, but your nose felt a bit tight. You can still try mouth tape. A nasal strip on the outside of your nose can make breathing through it easier at night, so it's worth wearing one when you start. Practice with the tape while you're awake before you sleep in it, and if the tightness turns out to be a passing cold or a bad allergy day, take the test again once it settles.

Start with your nose, not tape

You said the two minutes were hard, or you pressed “I had to stop”. If breathing through your nose is a struggle while you're awake and sitting still, taping your mouth shut at night isn't a good idea yet. This result isn't a dead end. Work on making nose breathing easier, using the ideas below, then repeat the test. If your nose is blocked most of the time, see a doctor about why.

Talk to a doctor before trying mouth tape

You ticked at least one box, and the reason matters. If the only box was a blocked nose right now, the fix is usually time. Congestion from a cold typically goes away by itself within a week, so wait until your nose is clear and take the test again. Taping your mouth while your nose is blocked makes it harder to breathe.

If you ticked loud snoring, gasping or pauses in your breathing, or daytime sleepiness, those are warning signs of obstructive sleep apnea. The American Academy of Sleep Medicine says snoring paired with choking, gasping or silent pauses in breathing is a reliable indicator of sleep apnea, and that anyone told they snore should talk to a medical provider about screening. Mouth tape doesn't treat sleep apnea. The authors of the 2022 mouth taping study say it is not recommended for people with moderate or severe sleep apnea because it may carry risks for them. Get checked first, and ask your doctor whether mouth tape makes sense for you afterwards.

How to make nose breathing easier

If your result told you to start with your nose, these are the places to begin. Nasal strips are the simplest. MedlinePlus describes them as adhesive strips that help widen the nostrils and make breathing easier. In a placebo-controlled trial of people with long-term nasal congestion, strips improved some measures of sleep and congestion on waking compared with placebo strips, and all the strips were well tolerated. In a small trial of people with chronic rhinitis, strips reduced how often people snored, though not how loudly. Strips help the nose, but a review of the research found they haven't been shown to improve sleep apnea.

For a stuffy nose, MedlinePlus suggests keeping mucus thin by drinking plenty of fluids, using a humidifier or steam, rinsing with a gentle saline spray and keeping your head raised, since congestion is often worse when you lie down. Be careful with decongestant nasal sprays you buy without a prescription. Using them for more than three days can make stuffiness worse, so stick to three days on and three days off unless your provider says otherwise. For allergies, doctors may recommend antihistamines or steroid nasal sprays.

Give it a few nights, then take the test again. If two minutes now feels easy or only a little tight, you'll get a different result. If your nose stays blocked whatever you try, a doctor can look for the cause. Treatment depends on the cause. It might be medication for allergies, or surgery for a deviated septum or enlarged turbinates.

How to start mouth tape if you passed

Take it slowly. Our guide to your first week with mouth tape walks through it night by night. The short version is to wear the tape while you're awake for 15 to 20 minutes on the first few days, then try it as you fall asleep, and only then try a full night.

Use tape made for skin. In the 2022 study, researchers used a silicone hypoallergenic tape. Check that you can open your mouth or peel the tape off easily with one hand before you lie down. If you wake up short of breath or anxious, or your lips get sore, take it off. In that study, tape that had come off by morning counted as a sign the person wasn't tolerating it, so if yours keeps ending up on the pillow, your body may be telling you something.

Keep your expectations realistic. A 2025 scoping review found little agreement in the research on mouth taping and said more high-quality studies are needed. One study it covered, in people without sleep apnea, reported less snoring when mouth taping was combined with other measures. The only way to know whether it suits you is to try it carefully.

When to see a doctor

See a doctor before you tape if you snore loudly, if anyone has seen you choke, gasp or stop breathing in your sleep, or if you're sleepy during the day even after a full night in bed. The American Academy of Sleep Medicine also lists unrefreshing sleep, morning headaches and trouble concentrating among common symptoms of sleep apnea.

For your nose, MedlinePlus advises contacting a provider if symptoms last more than three weeks, if discharge comes from only one side or smells bad, if you have discharge with a fever, or if a stuffy nose comes with swelling of the forehead, eyes or cheeks or with blurred vision. And if you ever wake up struggling to breathe with tape on, stop using it and get advice.