Quick Answer: A normal breath rate while sleeping is 12 to 15 breaths per minute for healthy adults -- slightly slower than the 12 to 20 breaths per minute typical when awake. Breathing naturally deepens and slows as your body shifts into restorative sleep stages.
In This Guide
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Breathing is so automatic that most people never think about what happens to it during sleep. Yet your breath rate while sleeping is one of the most revealing indicators of sleep quality and overall health. Wearable devices now track it every night, and researchers use it to flag everything from sleep apnea to early signs of illness. Understanding what is normal -- and what is not -- helps you make sense of those numbers on your fitness tracker and know when to seek medical advice.
What Is Breath Rate While Sleeping?
Breath rate, also called respiratory rate, is simply the number of complete breaths you take in one minute. One breath equals one inhalation and one exhalation. While you are awake and at rest, a healthy adult typically breathes 12 to 20 times per minute. During sleep, that rate slows and becomes more regular because your brain's demand for oxygen decreases and your muscles relax.
The respiratory centre in the brainstem -- specifically the medulla oblongata and the pons -- continues to regulate breathing automatically during sleep. However, several factors influence how fast or slow that rate becomes, including which sleep stage you are in, your age, your body position, and whether any underlying conditions affect your airway.
Sleep Science
During deep NREM (non-rapid eye movement) sleep, breathing becomes slow, deep, and highly regular. During REM sleep, breathing can become faster and slightly irregular as the brain becomes more active. This variability is entirely normal and reflects healthy sleep architecture.
Normal Ranges by Age
Breath rate changes significantly across a lifetime. Infants breathe much faster than adults, and the rate gradually slows as the respiratory system matures. The table below shows typical resting and sleeping breath rates by age group.
| Age Group | Awake (breaths/min) | Sleeping (breaths/min) |
|---|---|---|
| Newborns (0--1 month) | 30--60 | 30--60 |
| Infants (1--12 months) | 30--50 | 25--45 |
| Toddlers (1--3 years) | 24--40 | 20--35 |
| School age (6--12 years) | 18--30 | 14--22 |
| Teenagers | 12--20 | 12--18 |
| Adults (18--64) | 12--20 | 12--15 |
| Older adults (65+) | 12--28 | 12--18 |
These ranges reflect population averages. Individual variation is normal -- a fit, healthy adult who exercises regularly may have a resting breath rate near 10 breaths per minute without any cause for concern.
How Sleep Stages Affect Breathing
Your breath rate does not stay constant throughout the night. It shifts with each sleep stage in a predictable pattern.
NREM Stage 1 (light sleep): Breathing slows slightly from its waking rate. Muscle tone decreases and you may experience occasional twitching.
NREM Stage 2: Breathing becomes more rhythmic and continues to slow. Heart rate decreases alongside breath rate, and body temperature drops.
NREM Stage 3 (deep sleep / slow-wave sleep): Breath rate reaches its lowest point of the night -- typically 12 to 14 breaths per minute in adults. Breathing is very regular and diaphragmatic, meaning the diaphragm does most of the work rather than the chest muscles.
REM sleep: Breathing speeds up slightly and can become irregular. Episodes of slightly faster or slightly slower breathing are normal during REM. This stage is also when sleep apnea events are more likely to occur in those with the condition.
Comfort Tip
Sleeping on your side rather than your back encourages your airway to remain open and supports more regular breathing throughout the night. Many people find that a supportive mattress with good contouring helps them stay comfortable in a side-sleeping position.
Signs of Abnormal Breathing During Sleep
Occasionally waking with a gasp, noticing that your breath rate data from a wearable is consistently outside the normal range, or being told by a partner that you stop breathing during sleep are all reasons to speak with a doctor. Key warning signs include:
- Tachypnea: A persistently fast breath rate above 20 breaths per minute during sleep may indicate fever, anxiety, heart or lung conditions, or infection.
- Bradypnea: A rate consistently below 12 breaths per minute can be caused by certain medications (particularly opioids), neurological conditions, or hypothyroidism.
- Apnea episodes: Pauses in breathing lasting 10 seconds or longer are a hallmark of obstructive sleep apnea. These typically cause brief arousals and drops in blood oxygen.
- Hypopneas: Partial reductions in airflow that reduce oxygen saturation by at least 3--4% also warrant evaluation.
A medical disclaimer applies here: this article provides general educational information only. If you are concerned about your breathing during sleep, consult a qualified healthcare professional. A sleep study (polysomnography) is the gold standard for diagnosing sleep-related breathing disorders.
How to Track Your Breath Rate
Several methods exist for monitoring breath rate during sleep:
Wearable devices: Smartwatches and fitness trackers from brands like Fitbit, Garmin, Apple, and Withings estimate respiratory rate using a combination of heart rate variability, movement sensors, and (in some models) blood oxygen sensors. Accuracy varies between devices and between individuals.
Under-mattress sensors: Devices placed under a mattress pad can measure breathing movements without requiring the user to wear anything. These are useful for people who find wrist-worn devices uncomfortable during sleep.
Clinical measurement: In a hospital or sleep clinic, respiratory rate is measured directly by counting chest movements or by capnography (measuring exhaled CO2). This is the most accurate method.
Manual counting: A partner can count the number of times your chest rises in one minute while you sleep. This is imprecise but can confirm whether a wearable reading seems plausible.
How Your Mattress Affects Sleep Breathing
Your sleep surface has a meaningful influence on your breathing at night. A mattress that does not support proper spinal alignment can cause your airway to kink, particularly when sleeping on your back. A mattress that is too soft may cause you to sink in a way that restricts chest expansion. Conversely, a mattress with appropriate firmness and contouring allows your ribcage to expand freely and reduces the chance of positional airway obstruction.
From Our Team at Mattress Miracle
"We ask every customer about their sleep position when helping them choose a mattress," says Dorothy, our sleep specialist. "Side sleepers especially need a surface that cradles the shoulder and hip so the spine stays neutral -- and that directly affects how openly the airway sits during the night."
If you snore or wake frequently, it is worth considering whether your sleep surface could be contributing. A mattress that is worn down in the middle, forcing you into a curved position, may be exacerbating breathing difficulties that would otherwise be mild.
Monitoring your breathing at night? Mattress Miracle at 441½ West Street in Brantford carries adjustable bases that elevate the head, which can improve breathing rate during sleep. If your wearable shows irregular breathing patterns while lying flat, a slight incline often helps. Dorothy can show you adjustable bases with programmable positions for optimal breathing. Call (519) 770-0001.
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Call 519-770-0001Frequently Asked Questions
What is a normal breath rate while sleeping for adults?
Most healthy adults breathe 12 to 15 times per minute during sleep. This is slightly slower than the typical waking rate of 12 to 20 breaths per minute. During deep sleep, the rate may drop toward the lower end of that range.
Is it normal for breathing to be irregular during sleep?
Some irregularity is normal, particularly during REM sleep when the brain is more active. However, frequent pauses in breathing, gasping, or a persistently erratic pattern warrant medical evaluation for sleep apnea or other conditions.
Can a high sleeping breath rate indicate illness?
Yes. A breath rate consistently above 20 per minute during sleep can be an early indicator of fever, respiratory infection, anxiety, or heart and lung problems. Many wearable devices flag elevated sleeping respiratory rates as a potential illness signal.
How does alcohol affect breath rate during sleep?
Alcohol is a central nervous system depressant. It can suppress the respiratory drive, slow breathing, and worsen obstructive sleep apnea by relaxing the muscles of the throat and airway. Even moderate alcohol consumption before bed can measurably lower nighttime oxygen saturation.
Should I be worried if my wearable shows a breath rate of 10 during sleep?
A single reading of 10 breaths per minute may reflect a measurement artefact, particularly if your device uses optical sensors. If this reading is consistent night after night and you feel unrefreshed or fatigued, speak with your doctor to rule out bradypnea-related causes.
Sources
- Flenady, T., Dwyer, T., & Applegarth, J. (2017). Accurate respiratory rates count: So should you. Australasian Emergency Nursing Journal, 20(1), 45--47.
- Tobin, M. J. (1983). Breathing patterns during human sleep. Journal of Applied Physiology, 54(5), 1197--1205.
- Berry, R. B., et al. (2017). AASM Manual for the Scoring of Sleep and Associated Events (Version 2.4). American Academy of Sleep Medicine.
- Rundo, J. V., & Downey, R. (2019). Polysomnography. Handbook of Clinical Neurology, 160, 381--392.
- Fleming, S., et al. (2011). Normal ranges of heart rate and respiratory rate in children from birth to 18 years of age. The Lancet, 377(9770), 1011--1018.
Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle -- 441½ West Street, Brantford, ON -- (519) 770-0001
Hours: Monday--Wednesday 10am--6pm, Thursday--Friday 10am--7pm, Saturday 10am--5pm, Sunday 12pm--4pm.
If breathing difficulties during sleep are affecting your rest, the right mattress and sleep position can make a real difference. Come into our Brantford showroom and let our team help you find a sleep surface that supports open, easy breathing night after night.
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Related Reading
- Normal Respiratory Rate While Sleeping
- Oxygen Levels During Sleep: What the Numbers Mean
- How Sleep Affects Your Respiratory Rate
- Cheyne-Stokes Breathing: What It Is and When to Seek Help
- Body Tremors While Sleeping