4-7-8 Breathing
Slow inhale, long hold, extended exhale. Andrew Weil's protocol for acute stress and sleep.
About 1 to 2 minutes
What to do
- Sit comfortably with the spine tall.
- Rest the tip of your tongue against the ridge of tissue behind your upper front teeth and keep it there throughout the practice.
- Exhale completely through your mouth around your tongue, making a soft whoosh sound.
- Close your mouth and breathe in quietly through your nose for a count of four.
- Hold your breath for a count of seven.
- Exhale through your mouth around your tongue for a count of eight, making the whoosh sound.
- Repeat for four cycles.
Andrew Weil, who popularized this protocol, suggests starting with four cycles and building up to eight over time. The total duration of one cycle is about nineteen seconds.
Why it works
The pattern is a slow-paced breath with an extended exhale (twice the inhale duration) and a sustained hold at the top. The slow overall rate and the longer exhale activate the parasympathetic branch of the nervous system. The hold gives the body time to fully oxygenate before the long release.
The principles fit within the broader slow-breathing literature. Smaller direct studies on the 4-7-8 protocol have shown short-term effects on heart rate variability, blood pressure, and self-reported anxiety. The pattern is widely taught for acute stress, falling asleep, and managing strong emotions.
Guided breathing
Evidence
Rating: moderate
The 4-7-8 protocol is a slow-paced breath with an extended exhale and a sustained hold at the top of the inhale. The underlying principles (slow rate, longer exhale, parasympathetic activation) are well supported by the broader slow-breathing literature. Smaller controlled studies on the 4-7-8 protocol specifically have reported effects on heart rate variability, blood pressure, and anxiety, though the direct evidence base is thinner than for sustained six-breath-per-minute slow breathing.