This Is Why Deep Breathing Makes You Feel so Chill

McKenna Princing Fact Checked
© Jovo Jovanovic / Stocksy United

You probably don’t think about your breath that often. It’s always there, in the background, when you need it. But paying more attention to how you’re breathing can actually make a big impact on your stress levels.

“When you’re stressed or anxious, your breathing tends to be irregular and shallow,” says Kristoffer Rhoads, Ph.D., a clinical neuropsychologist who treats patients at the Memory & Brain Wellness Center at Harborview Medical Center. “Your chest cavity can only expand and contract so much, which makes it hard to get more air in.”

Deep breathing (sometimes called diaphragmatic breathing) is a practice that enables more air to flow into your body and can help calm your nerves, reducing stress and anxiety. It can also help you improve your attention span and lower pain levels.

Ready to give it a try?

How deep breathing calms the body—and mind

Your breath isn’t just part of your body’s stress response, it’s key to it. In fact, you can induce a state of anxiety or panic in someone just by having them take shallow, short breaths from their chest, Rhoads says.

That means that purposeful deep breathing can physically calm your body down if you’re feeling stressed or anxious.

But why does deep breathing work? It has to do with how your nervous system functions.

Here’s a quick and painless biology lesson: Your autonomic nervous system, which controls involuntary actions like heart rate and digestion, is split into two parts. One part, the sympathetic nervous system, controls your fight-or-flight response. The other part, the parasympathetic nervous system, controls your rest and relax response.

These two parts of your nervous system can’t be turned on at the same time, which means if you work to activate one, the other will be suppressed.

Breathing more deeply also allows for more carbon dioxide to enter your blood, which quiets down parts of the brain, like the amygdala, that handle your anxiety response. More carbon dioxide also helps synchronize your heartbeat and breathing, Rhoads says.

How to practice deep breathing

Deep breathing instead involves taking slower, longer breaths from your stomach to counter the short, rapid breaths that you default to when stressed or anxious.

Rhoads likes to teach deep breathing by first having someone activate their sympathetic nervous system. You can do this by sitting comfortably, closing your eyes and imagining an extremely stressful situation. Notice how your body responds: Your chest might tighten, your breathing might grow shallower and your heart might beat faster.

Next, turn your attention to your breath. Focus on breathing from your stomach, pushing your stomach out each time you inhale. Take longer breaths, counting to at least three for each inhalation and exhalation. Keep doing this even though it may feel uncomfortable at first. After a while, you will start to notice your body feeling more relaxed.

“Noticing the differences for yourself in how your body feels is more powerful than anyone describing it to you,” Rhoads says.

Deep breathing may be simple, but it isn’t necessarily easy. It can quiet your nervous system in a short amount of time, though it probably won’t provide instant relief from all anxiety. The more you practice, the better you’ll get at it and the more you’ll be able to use it in times of stress to help calm yourself down.

Deep breathing tips

Here are some ways to up your deep breathing game.

Try different breathing patterns

There are many different ways to breathe deeply, so play around to find one that feels natural to you. Try breathing in for four counts, then out for six. Or try square breathing: in for four, hold for four, out for four, hold for four. As long as you’re still keeping your breathing slow and deep, there’s no pattern that’s better than the others.

Practice self-compassion

Be kind to yourself as you practice deep breathing. Recognize that you might not notice results immediately, and that’s OK. Give yourself credit for trying, and keep practicing, even just for a few minutes at a time, until you reach a point where you notice it’s starting to help you manage your stress. Then keep at it. Deep breathing isn’t like riding a bike; you have to do it regularly for it to be helpful.

Be mindful

Being mindful can enhance your deep breathing practice. Mindfulness is about recognizing your emotions and what’s going on in your body without judging any of it as bad or good. To be mindful during deep breathing, focus on your breath and let any thoughts fade away. Don’t judge yourself for having them, but don’t pursue them; try to let them go. Notice if your body is tense or if your mind keeps trying to go back to a particular unpleasant topic, but don’t get down on yourself—just recognize what’s going on as a way of gathering information about yourself and your stress response.

Find a guide

If trying to guide your own deep breathing isn’t working well, try a phone app or website or audiobook that will guide you through the practice. You might find it helpful to record yourself talking through a breathing exercise and then playing it back when you want to practice. Or, if you need peer support, ask a friend to join you or research local meditation groups.