How your emotions change the way you breathe

One breath, two sets of controls

Most of the time you breathe without thinking about it. The brainstem sets the pace, matching air to what your body needs: more when you climb stairs, less when you sleep.

But that isn't the only set of controls. A 2008 review by Homma and Masaoka in Experimental Physiology points out that breathing also changes with emotions such as sadness, happiness, anxiety, and fear. The final rhythm comes out of a conversation between the brainstem and higher centers, including the limbic system and the cortex. That's why your breathing can change when you haven't moved a muscle.

How each emotion breathes

No emotion has a breathing pattern all its own, like a fingerprint. What exists are tendencies. A 1994 review by Boiten, Frijda, and Wientjes concluded that breathing mostly reflects broad dimensions: whether you're calm or worked up, loose or tense, taking something on or just enduring it.

A short 2020 review sums up the picture like this. Negative emotions that rev you up, such as fear, anger, and anxiety, come with faster, shallower breathing. Happiness makes it more variable. Calm positive emotions barely change the pace, while exciting ones speed it up. With disgust, breathing can slow or stop for a moment.

The 1994 review flags a limit of its own: nearly every study measured only how often and how much air, and left out other features, like the shape of each breath.

The scare: your stress response

Faced with a threat, real or imagined, your body gets ready to act. Harvard Health describes it this way: the pulse climbs, the person starts to breathe more rapidly, and the small airways in the lungs open wide to take in more oxygen with each breath. It's a useful response if you need to run.

If you don't need to run, that's more air than you can use. MedlinePlus, the U.S. National Library of Medicine's encyclopedia, lists anxiety, stress, and panic attacks among the causes of hyperventilation. Overbreathing lowers the carbon dioxide in your blood, which brings on lightheadedness, tingling in the arms or around the mouth, a pounding heart, and the feeling that you can't get enough air. Those sensations are frightening, right when you were already frightened.

The sigh, the breath of relief

A sigh is a breath that's deeper than the ones around it. In 2016, a group at the University of Leuven led by Elke Vlemincx ran an experiment using danger and safety cues. The relief people reported was greater after a deep breath than before it. And in people who were more sensitive to anxiety, muscle tension dropped after spontaneous sighs.

Cyclic sighing repeats that move on purpose: two inhales in a row through the nose and one long exhale through the mouth.

The road back

If emotion changes breathing, does breathing change emotion? There are signs that it does. The 2020 review describes a growing number of studies in which breathing pattern influences emotional state. One of the most cited is a 2002 paper by Philippot, Chapelle, and Blairy: they asked a group of people to produce joy, anger, fear, or sadness and to describe how they were breathing. The descriptions were consistent from person to person and resembled what labs record.

There's also a clue in the brain, so far only in mice. In 2017, a study in Science found, inside the center that generates the breathing rhythm, a cluster of about 175 neurons wired to a region that regulates alertness. With those neurons removed, the mice kept breathing the same way but spent more time calm. Nobody has shown the same thing in people.

In people, the evidence is a different kind. A 2023 trial of 108 adults found that five minutes of daily breathing exercises for a month improved mood, and a 2018 review linked slow breathing with feeling more relaxed. Those are modest, group-level results, not a promise.

What to do with this

• Notice before you fix. Your breath is an early signal. If it feels high, fast, or held, you've already learned something about how you're doing.
• Don't take in more air. In an anxious moment, big, fast breaths can add to the dizziness and tingling. Breathe less, and slower.
• Lengthen the exhale. 4-6 breathing is the simplest: in for 4 seconds, out for 6, through your nose.
• Bring the breath lower. With a hand on your belly, Belly breathing helps when the air is stuck up in your chest.
• For the minutes after a jolt, the After a scare sequence pairs three sighs with a slow minute.
• If focusing on your breath makes you more uneasy, drop it. And if anxiety is frequent or you have panic attacks, talk with a mental health professional. This is a practice, not a treatment.