Best breathing exercises for panic attacks: a step-by-step guide

There is a particular kind of fear that comes with a panic attack: your heart races, your chest tightens, and your mind tells you something is seriously wrong. In that moment, being told to “just breathe” can feel almost insulting. Yet breathing exercises, done properly and understood correctly, are genuinely one of the most effective tools for calming the body’s panic response. This guide walks through three well-researched techniques, explains the physiology behind them, and looks honestly at their limits.

Why breathing helps: the physiology of panic

Panic attacks are driven by the sympathetic nervous system, the body’s fight-or-flight response. When it activates, breathing becomes fast and shallow, often from the upper chest. This shallow breathing lowers carbon dioxide levels in the blood, which can cause dizziness, tingling and a sense of unreality, symptoms that frequently make panic feel even more frightening.

Slow, controlled breathing works because it directly engages the parasympathetic nervous system, particularly through stimulation of the vagus nerve. This helps restore a healthier balance of oxygen and carbon dioxide and signals to the body that it is safe. This is why the NHS recommends breathing exercises as a first-line self-help strategy for panic and anxiety symptoms, alongside psychological therapies such as CBT, which NICE recommends for panic disorder.

Diaphragmatic breathing

Also known as belly breathing, this technique targets the shallow chest breathing typical of panic.

• Sit or lie down comfortably, placing one hand on your chest and one on your abdomen
• Breathe in slowly through your nose for about four seconds, feeling your abdomen rise while your chest stays relatively still
• Pause briefly
• Exhale slowly through your mouth for six seconds, feeling your abdomen fall
• Repeat for two to five minutes

The longer exhale is important. It maximises the calming, parasympathetic effect and gives your body a clear physical cue that the danger has passed.

Box breathing

Box breathing, sometimes used by military and emergency personnel, is valued for its simplicity and rhythm, which can help anchor an anxious mind.

• Inhale through your nose for four seconds
• Hold your breath for four seconds
• Exhale slowly for four seconds
• Hold at the bottom for four seconds
• Repeat the cycle four to eight times

The equal counts create a predictable pattern that gives the mind something structured to focus on, which can interrupt the spiral of catastrophic thoughts that often accompanies panic.

Physiological sighing

This technique, brought into wider attention through research by Stanford neuroscientist Andrew Huberman and colleagues, involves a double inhale followed by a long exhale.

• Take a deep breath in through your nose
• At the top of that breath, take a second, shorter sharp inhale through your nose
• Exhale slowly and fully through your mouth
• Repeat for one to three minutes

This pattern maximally reinflates the lungs’ air sacs and offloads carbon dioxide efficiently, which some early research suggests may reduce physiological arousal more quickly than other breathing patterns. It can feel unusual at first, so it is worth practising when calm before relying on it during a panic attack.

Making the exercises work in the moment

• Practise daily when you are calm. Breathing techniques are skills, and they work best under stress when they are already familiar
• Do not aim for a “perfect” breath count. If four seconds feels too long, start with two or three
• Pair breathing with grounding, such as noticing five things you can see, to keep attention out of your head and in your body
• Expect some initial resistance. Slowing your breathing when your body wants to breathe fast can feel counterintuitive at first

When breathing exercises are not enough

Breathing techniques are a genuinely useful first step, but they are not a substitute for treatment when panic attacks are frequent, distressing or beginning to shape your life, such as avoiding certain places or situations. If you notice this pattern, it may indicate panic disorder, agoraphobia, or an underlying difficulty such as anxiety or PTSD. NICE recommends CBT as an effective, evidence-based treatment for panic disorder, often helping people understand and gradually change the thought patterns and avoidance behaviours that keep panic going. Many people also find that panic sits alongside broader stress or burnout, which benefits from a more comprehensive approach.

If panic attacks are becoming a regular part of your life, you do not need to manage them alone. At The Online Psychologists, our team offers evidence-based, HCPC-regulated support for panic from the comfort of your own home, with flexible appointments that fit around your life. To find out how therapy could help, get in touch to arrange a consultation.