Momentarily “forgetting” to breathe while awake is surprisingly common and, in most cases, not dangerous. Your brain has a dedicated respiratory center in the lower brainstem that drives breathing automatically, around 12 to 18 times per minute at rest. You don’t need to think about it for it to happen. But certain states of mind, body postures, and stress responses can temporarily interrupt or suppress that automatic rhythm, creating the unsettling sensation that you stopped breathing and had to consciously restart.
How Automatic Breathing Actually Works
Breathing is controlled by clusters of neurons in the brainstem that generate a rhythmic signal to your diaphragm and chest muscles. These rhythm generators run continuously, adjusting your breathing rate based on feedback from sensors that detect carbon dioxide levels in your blood. When CO2 rises even slightly, the sensors trigger a stronger urge to inhale. This is why you can’t actually suffocate yourself by holding your breath voluntarily: eventually, the CO2 buildup overrides your willpower and forces a breath.
The key detail is that breathing sits at a unique crossroads. It’s one of the few body functions that runs on autopilot but can also be taken over consciously. You can choose to hold your breath, speed it up, or slow it down. That dual control means there are moments when conscious attention and the automatic system can briefly interfere with each other, especially when you become hyper-aware of your own breathing pattern. Once you notice your breathing, it can feel like you need to “manage” each breath, which creates the illusion that if you stop paying attention, breathing will stop too. It won’t.
Screen Apnea and Focused Attention
One of the most common triggers is intense mental focus, particularly while using a computer or phone. This pattern has been called “email apnea” or “screen apnea.” People tend to hold their breath or breathe very shallowly in anticipation of what they’re about to read, see, or do on a screen. The inhale that comes with anticipation often isn’t followed by a full exhale, creating a cycle of shallow, incomplete breaths that you may not notice until you suddenly feel the need to gasp or sigh deeply.
Posture plays a role here too. When you lean forward toward a laptop or hunch over a phone, your arms and shoulders compress your chest, making it physically harder to take a full breath. The combination of mental absorption and a cramped rib cage means your breathing becomes so shallow it can feel like it paused entirely. If you’ve noticed this happening most often while working, reading, or scrolling, posture and focus are the likely explanation.
Anxiety and Hyperventilation Patterns
Anxiety is one of the most frequent reasons people become aware of pauses in their breathing. In anxious states, the body often shifts into a pattern of over-breathing (hyperventilation), taking in more air than it actually needs. This drives down CO2 levels in the blood, a condition called hypocapnia, which can make you feel short of breath even though you’re technically getting plenty of oxygen. Some people describe the sensation as so severe it feels like suffocation.
Here’s what makes this cycle confusing: the low CO2 weakens the chemical signal that normally triggers your next breath. So after a period of rapid or deep breathing, there can be a genuine pause before the brainstem’s rhythm generators fire again. You then notice the gap, panic slightly, and consciously force a breath, which often restarts the over-breathing cycle. The whole pattern feeds on itself. The breathing pauses feel alarming, but they’re actually your body’s attempt to rebalance CO2 levels after hyperventilating.
This pattern can also show up during periods of chronic low-level stress, not just full-blown panic attacks. If you’ve been under sustained pressure at work or dealing with ongoing worry, your baseline breathing pattern may have shifted toward shallow, irregular breaths without you realizing it.
Sleep-Related Habits That Carry Over
Some people who experience pauses in breathing while awake also have obstructive or central sleep apnea. In obstructive sleep apnea, the airway physically collapses during sleep, causing repeated breathing pauses. Central sleep apnea involves the brain intermittently failing to send the signal to breathe. While both conditions are defined by what happens during sleep, some people with central sleep apnea notice similar lapses during relaxed wakefulness, particularly when drowsy or in a reclined position. If you also snore heavily, wake up feeling unrested, or have been told you stop breathing in your sleep, this connection is worth exploring.
When Breathing Pauses Signal Something Else
Occasional awareness of a breathing pause during concentration or stress is normal. But certain patterns suggest something beyond a benign quirk. A resting breathing rate consistently below 12 breaths per minute or above 25 breaths per minute can indicate an underlying health condition. Other red flags include difficulty speaking in full sentences because you can’t get enough air, a bluish tint to your lips or fingertips, episodes where you feel faint or lose consciousness after a breathing pause, and a heart rate that spikes above 120 while you’re at rest.
Neurological conditions that affect the brainstem can, in rare cases, impair the automatic breathing drive. These are uncommon but worth mentioning because the symptom would be persistent and progressive, not occasional. If your breathing pauses are becoming more frequent, lasting longer, or happening alongside new neurological symptoms like numbness, weakness, or changes in coordination, that warrants a medical evaluation.
Practical Ways to Reset Your Breathing
For the vast majority of people experiencing this, the fix is behavioral rather than medical. The most effective approach is diaphragmatic breathing: placing one hand on your chest and the other on your belly, then breathing so that your belly hand rises while your chest hand stays relatively still. This engages the diaphragm fully and counteracts the shallow chest breathing that leads to pauses. Practicing this for five minutes a few times a day can help retrain your resting breathing pattern over weeks.
Paced slow breathing, where you deliberately slow your rate to around six breaths per minute (roughly five seconds in, five seconds out), has been shown to reduce both the physiological and psychological stress responses that contribute to irregular breathing. You don’t need an app or special equipment, though metronomes or visual timers can help you maintain the pace at first.
If screen apnea is your main trigger, simple environmental changes make a real difference. Position your monitor at eye level so your chest isn’t compressed. Set a periodic reminder to check in with your breathing. Even a sticky note on your monitor that says “breathe” can interrupt the pattern of unconscious breath-holding during focused work. Over time, the goal is for your awareness of the problem to fade as your automatic rhythm reasserts itself, which it reliably does once you stop fighting it.