Breathe in slowly through your nose for 4 counts. Breathe out through pursed lips for 6–8 counts. Repeat. Focus only on slowing your exhale. Keep reading for full instructions.
Hyperventilating is terrifying — your heart races, your hands tingle, you feel dizzy and short of breath, and the harder you try to breathe, the worse it gets. The cruel irony is that hyperventilation is caused by breathing too much, not too little. And the fix is to slow your breathing down, even though every instinct tells you to breathe faster.
This guide explains exactly what is happening and gives you a step-by-step method to stop it.
Hyperventilation means breathing faster and deeper than your body needs. This rapidly lowers carbon dioxide (CO₂) levels in your blood. Despite what many people think, the "can't breathe" feeling during hyperventilation is caused by low CO₂, not low oxygen. Your oxygen levels are actually fine — often higher than normal.
Low CO₂ causes blood vessels to constrict, which produces the classic symptoms:
These symptoms then trigger more anxiety, which drives more hyperventilation — a self-reinforcing cycle that breathing correctly can break.
Tell yourself: "I am hyperventilating. I have too much oxygen, not too little. I am not in danger. Slowing my breathing will fix this." This is important because anxiety about the symptoms amplifies them.
Purse your lips as if you are blowing out a candle. Breathe out slowly through this narrow opening. Pursed lip breathing naturally slows your exhale and helps retain CO₂, restoring balance faster than any other technique.
Follow this pattern until symptoms resolve:
While breathing, focus on physical sensations to interrupt the anxiety spiral. Feel your feet on the floor. Name 5 things you can see. This activates the prefrontal cortex and reduces the amygdala's alarm response.
You may have heard that breathing into a paper bag helps hyperventilation. This can work because you re-breathe CO₂ you just exhaled, which restores CO₂ levels. However, it is no longer recommended as a standard treatment because it can reduce oxygen in people who have underlying conditions. Slow pursed-lip breathing is safer and equally effective.
Hyperventilation is almost always triggered by anxiety or panic — even when it does not feel like it. Other triggers include:
For many people, chronic mild hyperventilation becomes a habit — they breathe slightly too fast all the time, sitting just below the threshold of obvious symptoms. Stress tips them over into an episode.
The most effective prevention is training your baseline breathing rate to be slower. Most adults breathe 12–20 times per minute. The optimal rate for CO₂ balance and vagal tone is closer to 6–10 breaths per minute.
Daily breathing practice for 5–10 minutes trains your body to default to slower, calmer breathing:
Hyperventilation and panic attacks often occur together — each makes the other worse. Hyperventilation causes physical symptoms that feel like a medical emergency, which triggers panic, which causes more hyperventilation.
The breathing techniques above work for both. The key insight is the same: slow your exhale, restore CO₂, interrupt the cycle. If panic attacks are frequent, structured daily breathing practice reduces their frequency and severity over time.
Seek emergency care if you experience hyperventilation alongside: chest pain that does not resolve, loss of consciousness, severe one-sided weakness or numbness, or if symptoms are not improving after 10 minutes of slow breathing. These could indicate conditions unrelated to anxiety that need medical evaluation.
Guided breathing sessions that train slower, calmer breathing patterns — free on iPhone.
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