Why can't I get a full breath when I have anxiety?

Air hunger from anxiety happens when alert mode braces the muscles around your ribs and pulls your breathing high into your chest. Because your chest cannot expand easily, each breath stops short of full.

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What happens in your chest

Air hunger is the feeling that you cannot get a satisfying breath. Each inhale stops short of full, leaving you with an urge to yawn, sigh, or gulp air.

When you feel anxious, your body switches into alert mode, which is built for running from a threat. In alert mode, the muscles around your ribs and chest brace. Because your chest cannot expand easily, your breath feels blocked at the top.

At the same time, anxious breathing becomes faster and higher in the chest, with more sighs and yawns. Breathing more than your body needs lowers carbon dioxide in your blood, which can bring tingling, lightheadedness, and a tight chest. In anxious over-breathing your oxygen levels usually stay normal. The feeling comes from how you are breathing, not from a lack of air.

Why forcing a breath backfires

When every inhale feels unfinished, the natural reaction is to haul in a huge breath to try to get enough air. Forcing a big, deep breath usually makes air hunger worse. Taking in more air lowers carbon dioxide further and tires the muscles around your chest, so the next breath feels even more blocked.

You may also start checking whether each breath felt full. Breathing you watch closely tends to turn irregular.

Air hunger from anxiety is not dangerous. Your body keeps breathing on its own, including when you are not thinking about it and while you sleep.

Why the feeling lingers

After weeks of anxiety, your body can stop switching between rest mode and alert mode and stay in alert mode. Because your body holds that state, air hunger can show up on days you do not feel anxious.

When this pattern of high, fast breathing lasts for weeks, it is sometimes called a breathing pattern disorder, which a physical therapist trained in breathing retraining can help with.

Light, Slow, Deep (LSD) Breathing moves the breath lower, out into the sides of your ribs. Over a few minutes it lets carbon dioxide come back up, and the urge to gulp air eases. This state is trainable with daily practice.

Try LSD Breathing right now

Place your hands on either side of your ribcage.
Breathe in slowly through your nose and feel your ribs widen out to the sides, not up into your chest.
Let the exhale fall without forcing it, with your ribs drawing back in, and let your belly soften 10% more.
Breathe quietly enough that you can't hear it. After 4 to 5 breaths, breathe naturally and notice.

Play LSD Breathing 3 min

When to check with a doctor

You are suddenly or severely short of breath, or your lips turn blue or gray (call emergency services).
You have chest pain, or a racing or irregular heartbeat with it (call emergency services).
Your calf is swollen and painful, or the breathlessness began after surgery, a long journey or giving birth (call emergency services).
You get breathless lying flat, or your ankles are swollen.
You have a cough that won't go away, a fever, wheezing, or you cough up blood.
You have asthma or a heart or lung condition and your breathing is worse than usual.
It is getting steadily worse over days or weeks.

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Common questions

Can anxiety cause shortness of breath?

Yes. With anxiety it usually shows up as air hunger: each breath feels unfinished, with a tight chest and an urge to yawn or sigh. Sudden or severe breathlessness, or breathlessness with chest pain, needs emergency care: call emergency services.

How long does air hunger last with anxiety?

A single bout of air hunger often eases over a few minutes once you switch to lighter, slower breathing low in your ribs.