breathing.dev · Learn

EN NL DE ES FR IT

4-7-8 breathing

Inhale for 4, hold for 7, exhale for 8. The long exhale does the work: it leans on the body's own brake pedal.

Typical cadence

• Inhale 4s • Hold 7s • Exhale 8s • No rest
• If 7s holds feel uncomfortable, shorten gently

How it works

A 4–7–8 style (inhale–hold–exhale) extends the exhale and adds a pause, which can bias vagal activity and downshift arousal. While direct clinical trials on this exact pattern are limited, it fits within slow, paced breathing approaches that improve HRV and perceived calm.

Evidence highlights

• Slow/paced breathing paradigms generally increase HRV and reduce arousal in healthy adults (review).
• Longer exhales and slower rates likely enhance RSA and parasympathetic tone.
• HRV biofeedback literature supports benefits of slow, structured breathing on baroreflex function and mood regulation.

How to practice

• Start with Inhale 4 • Hold 4–5 • Exhale 6–8, then build to 4–7–8
• Keep it comfortable; ease off if breath-holds feel strained

Safety notes

• Extended holds may not suit everyone—modify durations
• If you have respiratory or cardiovascular conditions, check with a clinician

References

• Zaccaro et al., 2018 — How breath-control can change your life: a systematic review on psycho-physiological correlates of slow breathing (Frontiers in Human Neuroscience)
• Lehrer & Gevirtz, 2014 — Heart rate variability biofeedback: how and why does it work? (Frontiers in Psychology)
• Russo et al., 2017 — The physiological effects of slow breathing in the healthy human (Breathe)

Disclaimer: This information is educational and not medical advice. If you have cardiopulmonary or other medical conditions, consult a healthcare professional before changing your breathing practices.