Why Is My Respiratory Rate Elevated? What Oura, Whoop, Apple Watch, Garmin and Fitbit Are Telling You

Short answer: An elevated respiratory rate on a ring or watch means you breathed faster in your sleep than you usually do, judged against your own baseline. Most healthy people hold a very steady overnight rate, usually within a breath or two of their normal from one night to the next, which is why a rise stands out. Common reasons include the start of an illness, alcohol or a hard workout late in the evening, a hot bedroom, altitude, and the late part of the menstrual cycle, and sometimes the number is simply a measurement glitch. One high night is rarely worth acting on. Several nights in a row, especially alongside a higher resting heart rate and lower heart rate variability, is worth noticing, and breathlessness, chest pain or fever belong with a doctor.

It is 7:10 on a Tuesday. You open the app before you are properly awake, and there it is, in a colour designed to be noticed: respiratory rate 16.9, against a usual 14.8. You feel fine. Probably. You now spend the shower auditing your throat for soreness.

That number deserves some attention, and less alarm than the colour suggests.

How does a ring or watch measure your breathing?

Indirectly, through your heart. Your heart speeds up slightly on every inhale and slows on every exhale, a normal reflex called respiratory sinus arrhythmia. The optical sensor on the underside of the device records the time between heartbeats, and software counts how many of those speed-up-and-slow-down cycles happen per minute. Each cycle is one breath. Oura, Whoop, Garmin and Fitbit all describe this method in their own documentation; Apple's support pages do not say how the watch calculates the number. We explain the physiology in more depth in our RRV vs HRV guide.

Where the devices differ is when they measure and what they show you:

Most of these numbers describe you asleep, the most stable state you spend time in and so the best one for spotting change. And each one is an estimate built from your pulse, good enough to track trends and imperfect in the ways we cover in our piece on how accurate wearable respiratory rates are.

Two estimates of the same night can disagree. Dr Anupama Gowda, who researches how people relate to their own wearable health data, wore a watch and a smart ring together for eight months. "The devices were in conflict with the same body," she told us on our podcast: one would report her well rested on mornings her body said otherwise. Most of these devices, as she put it, are "relying on the proxy data of your breath." A proxy is fine for spotting a trend. It deserves less trust on any single night.

Why does the change matter more than the number?

Because your normal is narrow and personal. Oura, Whoop, Garmin and Fitbit all quote the textbook resting range for adults, 12 to 20 breaths per minute, which is too wide to tell you much. Oura's help pages put the useful part plainly: changes in the nightly average "tend to be quite small from night to night (within 1–2 breaths per minute)", and you should compare changes "relative to your own baseline and not with other people's data" (Oura). Fitbit says breathing rate during sleep "usually doesn't vary significantly from night to night" (Google Health Help).

So a rate of 17 means nothing on its own. For someone who usually sits at 16.5 it is a quiet night. For someone who usually sits at 14 it is three breaths above their normal, which is a large move on a metric this steady. That is also why Apple asks you to wear the watch to sleep for seven nights before the Vitals app can establish your typical range (Apple Support). Without your baseline, the device has nothing to compare against.

What pushes your respiratory rate up?

Getting sick. This is the reason people worry about first, and it has the best evidence. In a study of 2,745 people with PCR-confirmed COVID-19 who wore Fitbit devices, respiration rate showed "the largest effect" of the metrics tracked around the start of symptoms and took "the longest time to return to its base value" (Natarajan et al., 2020). A Whoop study went further and trained a model to spot infection from night-time breathing. Read its results carefully, though: the model picked up 20% of COVID-positive people in the two days before their symptoms started, and 80% by the third day of symptoms, and its threshold was deliberately set to catch more cases at the cost of more false alarms (Miller et al., 2020). Both studies were written by researchers paid by the device makers. The fair summary is that a rise often shows up around the time you get sick, more reliably once you already feel it than before, and that it is a nudge to rest, not a test result.

Your menstrual cycle. Breathing tends to run slightly faster toward the end of the cycle. Johanna Lehmann, an executive breathwork coach, told us on our podcast that while training for a race she performs better in the first half of her cycle, and that for women "in the second half, the breathing rate also increases." In a study of 237 women wearing a sensor bracelet nightly, respiratory rate was highest in the late luteal phase, the days before a period, and lowest around the fertile window (Goodale et al., 2019). The effect is real and it is small: in the study's nightly measure the gap between those two phases was about 0.6 breaths per minute, 16.4 against 17.0. The cycle can explain a slight upward drift every month. It cannot explain a three-breath jump by itself.

Your evening. The companies' own lists overlap here. Whoop names alcohol in the evening and caffeine (Whoop); Apple names alcohol intake and medications. Oura notes that intense exercise can keep your breathing rate up for roughly 20 to 40 minutes afterwards, which matters if the workout ends shortly before bed, and that a bedroom warm or cold enough to make your body work can nudge the number up slightly.

Where you slept. Altitude and poor air quality both raise breathing, because your body has to work harder to get the same oxygen. Oura, Whoop, Apple and Garmin all list one or both. A first night at a mountain hotel can look a lot like an illness on the graph.

The measurement itself. Because the number is read from your heartbeat, anything that scrambles the heartbeat pattern can produce a strange value. Oura lists heavy snoring, coughing and excess movement as sources of variation in the data, and Apple warns that a loose watch may not capture accurate readings. A single odd night with no other explanation is often just that.

What does each device's warning actually mean?

Whoop. Respiratory rate is one of the inputs to your Recovery score, alongside sleep, resting heart rate and heart rate variability, and the Health Monitor tells you when it strays outside your personal norm. Whoop reports the median for the night, which resists a few odd minutes better than an average does.

Oura. The nightly average sits in your Readiness tab. Oura is relaxed about single nights: a deviation of more than two breaths per minute "may not indicate anything alarming per se". What its guidance flags is a rate that stays well off your normal for several nights.

Apple Watch. The Vitals app only sends a morning notification when multiple metrics fall outside your typical range at the same time, and it suggests possible factors. A single high respiratory rate on its own will show as an outlier in the Health app without triggering an alert. Apple's sleep apnea notifications are a separate feature: the watch's accelerometer counts "breathing disturbances" over a 30-day window, a different measurement from the respiratory rate in Vitals (Apple Support). A high respiratory rate is not Apple telling you anything about sleep apnea.

Garmin. Garmin tracks respiration through the day as well as the night, so expect big numbers during exercise; its own guidance says the rate can reach 40 to 50 breaths per minute during intense activity. The readings worth attention are the resting ones. Garmin says a rate that rises "well above or below your average during a period of inactivity" may indicate a change in your health or a problem with air quality (Garmin). Gaps in the chart are deliberate: the watch discards readings taken while you move.

Fitbit. Breathing rate lives under Respiratory in the Google Health app. It is calculated only from your longest sleep in the past 24 hours, and only if that sleep lasted more than three hours, which is the usual reason for a morning with no data at all.

What should you do with a high reading?

Start with the boring explanations. Did you drink, train late, sleep somewhere hot or high, or wear the band loosely? If one of those fits, the reading has done its job and you can let it go.

If nothing fits, look at the next few nights, and at what the other lines are doing. A breathing rate that stays up for several nights while your resting heart rate climbs and your heart rate variability drops is the combination Oura describes as typical of fighting off an illness. That is a reasonable cue to sleep more, train less and pay attention to how you feel.

What a single number should not do is run your day. In one experiment, people given falsely bad sleep feedback reported feeling more tired by evening, whatever their night was actually like, an effect we covered in When Your Sleep Score Makes You Feel Worse. A respiratory rate is one input to weigh against how you actually feel.

Where Alveos One fits: Rings and watches estimate your breathing indirectly, and most only read it while you sleep. Alveos One senses breathing directly at the sternum, day and night, and one of its core measures is how far your resting breathing rate has moved from your own baseline, the same comparison this article recommends, available in the afternoon as well as at 7:10 the next morning. In a University of Kent study (a bioRxiv preprint we funded, June 2026), its respiratory rate was within 2 breaths per minute of the laboratory reference in 94.6% of measurements at rest; the methodology and its limits are on our science page. Like every device on this page, it is a wellness tool. It can show you a change in your breathing. It cannot tell you why.

When to see a professional

A tracker reading is a reason to pay attention, not a diagnosis. Get medical help promptly if a raised breathing rate comes with shortness of breath at rest, chest pain, fever, dizziness or confusion, or a bluish tint to your lips or skin. See a doctor if your resting rate stays well above your normal for several days and you feel unwell, or if a partner notices loud snoring, gasping or pauses in your breathing at night, whatever any device shows. Alveos One is a wellness device for tracking breathing patterns. It does not diagnose or treat any medical condition.

FAQ

What is a normal respiratory rate while sleeping?

For healthy adults at rest, the commonly quoted range is 12 to 20 breaths per minute, the figure Oura, Whoop, Garmin and Fitbit all use. The more useful number is your own: most people's overnight rate stays within a breath or two of their normal from night to night, so your own baseline is the number to compare against.

Why is my Whoop or Oura respiratory rate elevated?

The most common reasons are the start of an illness, alcohol or caffeine in the evening, a hard workout close to bedtime, a hot or cold bedroom, altitude, and the luteal phase of the menstrual cycle. Snoring, coughing or a loose fit can also distort the reading. A rise that lasts several nights alongside a higher resting heart rate and lower HRV is the pattern worth noticing.

Does an elevated respiratory rate mean I'm getting sick?

It can be an early sign. Studies of Fitbit and Whoop users found breathing rate rises around the onset of COVID-19 symptoms, more reliably once symptoms have started than before. Plenty of harmless things raise it too, so treat it as a reason to rest and watch how you feel.

Can Apple Watch respiratory rate detect sleep apnea?

No. Apple's sleep apnea notifications come from a separate feature that uses the accelerometer to count breathing disturbances over 30 days, a different measurement from the respiratory rate in the Vitals app. If you or a partner notice snoring, gasping or breathing pauses, talk to a doctor.

Why does my Fitbit say no data for breathing rate?

Fitbit calculates breathing rate only from your longest sleep in the last 24 hours, and only when that sleep lasted more than three hours. A short night or a night of naps produces no reading.

Is a low respiratory rate on my tracker bad?

Usually not. Garmin notes that fitter people tend to have lower resting breathing rates. A resting rate that suddenly drops well below your usual average is worth watching, and it belongs with a doctor if it comes with drowsiness, confusion or other symptoms.

Sources

• Oura Member Care. "Respiratory Rate." Updated May 13, 2026: support.ouraring.com

• Meserve C. "Increased Respiratory Rate: Causes and What It Means." WHOOP, May 15, 2026: whoop.com

• Apple Support. "Track your overnight and daytime vitals with Apple Watch.": support.apple.com

• Apple Support. "Sleep apnea notifications on your Apple Watch.": support.apple.com

• Garmin. "Respiration Rate," Garmin Technology: garmin.com

• Google Health Help. "How do I track breathing rate in the Google Health app?": support.google.com

• Natarajan A, Su H-W, Heneghan C. "Assessment of physiological signs associated with COVID-19 measured using wearable devices." npj Digital Medicine. 2020;3:156: pmc.ncbi.nlm.nih.gov

• Miller DJ, Capodilupo JV, Lastella M, et al. "Analyzing changes in respiratory rate to predict the risk of COVID-19 infection." PLOS ONE. 2020;15(12):e0243693: pmc.ncbi.nlm.nih.gov

• Goodale BM, Shilaih M, Falco L, et al. "Wearable Sensors Reveal Menses-Driven Changes in Physiology and Enable Prediction of the Fertile Window: Observational Study." Journal of Medical Internet Research. 2019;21(4):e13404: jmir.org

• Art & Science of Breathing podcast, E14: Dr Anupama Gowda, "The Promise & Perils of Wearables: Can We Trust Our Own Data?" (quotes at 01:24 and 16:13): alveoslabs.com

• Art & Science of Breathing podcast, E11: Johanna Lehmann, "How Breathwork Rewires Stress, Sleep and Performance for High Achievers" (quote at 24:26): alveoslabs.com

• Alveos science page (University of Kent study: respiratory rate within 2 breaths/min of laboratory reference in 94.6% of measurements at rest): alveoslabs.com