Hold My ChaosAnxiety, sleep and stress

Breathing for anxiety and panic attacks

· 4 min read · Updated 31 October 2026

When anxiety rises, breathing often speeds up, and fast breathing can make anxiety feel even worse. Slowing your breath is one of the simplest ways to step out of that loop.

In short

What happens in a panic attack

In a panic attack the heart races and breathing speeds up. You may feel faint, dizzy, sweaty or sick, your fingers may tingle, and your chest may hurt or feel as if you are choking. Many people feel a sense of dread or a fear that they are dying.

It feels dangerous, but it is not. Most panic attacks last 5 to 20 minutes, and some have been reported to last up to an hour.

Many of these symptoms come from the breathing itself. When you breathe faster or deeper than your body needs, you blow off too much carbon dioxide. Its level in the blood drops, blood vessels narrow, and you feel lightheaded, tingly and short of breath. Anxiety and panic are the most common causes of this kind of occasional overbreathing, called hyperventilation.

How fast breathing can keep panic goingA loop of four steps: you breathe fast; you breathe out too much carbon dioxide; you feel dizzy, tingly or short of breath; this feels frightening, so you breathe even faster. Slowing your breathing, with a longer breath out, breaks the loop at the first step.Slow breathing,longer breath outFast, shallowbreathingToo much carbondioxide outDizzy, tingling,short of breath“Something iswrong”
Fast breathing and fear can feed each other. You cannot switch off fear on command, but you can slow your breathing, and that is where the loop can be cut.

What to do during an attack

The NHS suggests:

A slow breath out matters most. One simple way is pursed-lip breathing: purse your lips as if you were blowing out a candle and breathe out slowly through them. If you are with someone who is panicking, stay calm, reassure them and count slowly with each of their breaths.

Three exercises to try

All three are gentle and need nothing but a few minutes. Practise them when you are calm, so that in a hard moment your body already knows what to do.

1. The NHS 5-5 exercise. Sit in a chair that supports your back, stand, or lie down, and loosen anything tight. Let the breath flow deep into your belly without forcing it. Breathe in through your nose while counting steadily from 1 to 5, then breathe out through your mouth counting from 1 to 5. At first you may not reach 5, and that is fine. Keep going for at least 5 minutes. The NHS says you get the most benefit if you do it regularly, as part of your daily routine.

2. The physiological sigh. Breathe in through your nose, then take a second, shorter breath in on top, and breathe out slowly until your lungs feel empty. In a 2023 study, 108 people did one of four 5-minute practices every day for a month. Mood improved most with breathing exercises, and most of all with this one, called cyclic sighing in the study. Anxiety fell in every group, including the people who meditated, so the sigh was not better for anxiety than mindfulness. It was a small, early study, but this sigh is easy and quick to use. How to do the physiological sigh.

3. The long exhale. Breathe in for four counts and out for eight. Your heart slows a little each time you breathe out (how breathing works), so with a long exhale more of every breath is spent in that slower part. If eight feels too long, start with six. How to do the long exhale.

Breathing rhythms on the same time scaleNHS exercise 5-5: Breathe in through your nose 5 s, Breathe out 5 s. Physiological sigh: Breathe in 2 s, A little more 1 s, Breathe out 6 s. Long exhale: Breathe in 4 s, Breathe out 8 s.NHS exercise 5-5Breathe in through your noseBreathe out5 s5 sPhysiological sighBreathe inA little moreBreathe out2 s1 s6 sLong exhaleBreathe inBreathe out4 s8 s
The three rhythms on the same time scale. In each one the breath out is at least as long as the breath in, and in the sigh and the long exhale it is clearly longer.

Why not a paper bag

Breathing into a paper bag used to be common advice for hyperventilation. Doctors no longer recommend it. Breathing your own air back in can lower the oxygen in your blood, and symptoms that feel like hyperventilation sometimes have other causes, such as heart or lung problems. Doctors have described deaths in people given a paper bag when their real problem was low oxygen or a heart problem.

When it is not just panic

Panic attacks are not dangerous, but other conditions can feel similar. Call your local emergency number (112 works anywhere in the EU) if:

If panic attacks keep coming back, talk to a doctor. Repeated panic attacks can be a sign of panic disorder, which is a recognised condition you can get help for.

Common mistakes

Try it

Hold My Chaos guides you through it with a calm visual and gentle haptics. Coming soon to iPhone.

Sources

  1. NHS: Panic disorder
  2. NHS: Breathing exercises for stress
  3. MedlinePlus (NIH): Hyperventilation
  4. Cleveland Clinic: Hyperventilation
  5. Balban et al. (2023): Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine
  6. British Thoracic Society (2022): Clinical statement on air travel for passengers with respiratory disease. Thorax
  7. Callaham (1989): Hypoxic hazards of traditional paper bag rebreathing in hyperventilating patients. Annals of Emergency Medicine
  8. NHS: Chest pain
  9. European Commission: 112, the EU's emergency number

These guides explain, they do not diagnose or treat. If your symptoms are new, severe or worrying, talk to a doctor. In an emergency, call your local emergency number (112 anywhere in the EU).