4-7-8 Breathing Timer
A free, guided relaxation exercise to help you unwind and fall asleep faster.
The 4-7-8 breathing technique is a relaxation method popularized by Dr. Andrew Weil, who calls it a "natural tranquilizer for the nervous system." You inhale through your nose for four seconds, hold for seven, and exhale slowly through your mouth for eight. The long, complete exhale is the key — it is what makes this pattern so effective for winding down at the end of the day. The timer above guides each phase so you can simply breathe and let go.
How to Practice
- 1
Inhale. Breathe in quietly through your nose for 4 seconds.
- 2
Hold. Hold your breath for 7 seconds.
- 3
Exhale. Exhale completely through your mouth with a soft whoosh for 8 seconds, then repeat.
Why 4-7-8 Breathing Works
The defining feature of 4-7-8 is that the exhale is twice as long as the inhale. Extending the out-breath strongly stimulates the vagus nerve and engages the parasympathetic nervous system, the branch responsible for rest, digestion, and recovery. The result is a measurable slowing of heart rate and a felt sense of calm.
The seven-second hold gives oxygen and carbon dioxide time to balance in the bloodstream, which can ease the sense of breathlessness that often accompanies anxiety. Repeating the cycle a few times creates a gentle, downward-shifting rhythm — ideal for the transition into sleep or for stepping back from a stressful moment.
When to Use It
This technique is at its best when your goal is to relax or sleep. Practice it in bed before you intend to fall asleep, during a bout of nighttime wakefulness, or whenever you feel keyed up and want to come down quickly. Because the long exhale is deeply relaxing, it is better suited to evenings than to moments when you need to stay alert.
Dr. Weil originally suggested four cycles per session when starting out, building up gradually with practice. Even a single round can take the edge off; four rounds is a complete, calming reset.
Tips for Best Results
Exhale through your mouth with your lips lightly pursed, making a soft whoosh sound, while the tip of your tongue rests against the ridge behind your upper front teeth. Keep the inhale quiet and through the nose.
The exact seconds matter less than the ratio — keep the exhale roughly twice the length of the inhale. If eight seconds feels too long at first, shorten everything proportionally (for example 2-3.5-4) and work up over time. Stop if you feel dizzy; the lightheadedness some beginners notice fades as you practice. For sleep, stay lying down and let the final exhale melt into rest.
Frequently Asked Questions
What is the 4-7-8 breathing technique? +
It is a relaxation exercise where you inhale for 4 seconds, hold for 7, and exhale for 8. Popularized by Dr. Andrew Weil, the extended exhale calms the nervous system and is widely used to relieve stress and aid sleep.
Does 4-7-8 breathing help you sleep? +
Many people find it helps them fall asleep faster because the long exhale activates the parasympathetic nervous system and slows the heart rate. Practiced regularly in bed, it becomes a reliable cue that it is time to rest.
How many times should I repeat the 4-7-8 cycle? +
Dr. Weil recommends starting with four cycles per session and increasing gradually as it becomes comfortable. Even one or two rounds can noticeably ease tension.
What if I can’t hold my breath for 7 seconds? +
Keep the ratio rather than the exact seconds. Shorten each phase proportionally — for example 2-3.5-4 — while keeping the exhale about twice the inhale, then build up with practice.
Is 4-7-8 breathing safe? +
It is safe for most healthy adults. Some beginners feel briefly lightheaded; if that happens, return to normal breathing and ease back in. If you have a respiratory or cardiovascular condition, or are pregnant, check with your doctor first.