No account needed — just breathe. Add one only if you want your journal to sync across devices: we store your email solely to sign you in, never sell it, never use it to track you, and you can delete it and all your data in one tap.
In for four, hold for seven, out for eight — four rounds, about a minute, and you are noticeably further down.
Developed by Dr. Andrew Weil based on the ancient yogic practice of pranayama, the 4-7-8 pattern acts as a natural tranquilizer for the nervous system. The extended hold forces your body to replenish its oxygen and the long, controlled exhale stimulates the parasympathetic nervous system, slowing the heart and promoting deep relaxation. With regular practice twice daily, the effect becomes stronger over time, making it increasingly effective at inducing sleep, reducing anxiety, and managing cravings.
Dr. Weil recommends exactly 4 cycles for beginners. Increase to 8 after a month of practice.
You completed your breathing session.
You've got a journal building up here.
You just did something 90% of people won't. This app helped. Keep it alive.
Keep This App BreathingEvery session you complete is recorded here.
Pick a moment — we'll wrap the right breathing technique into a little gift they can open.
Want to see how many people your calm reaches?
Dr Andrew Weil popularised 4-7-8 as a "natural tranquilizer for the nervous system". The name is the whole method: inhale four, hold seven, exhale eight. What makes it work is not the numbers themselves but their shape — the exhale is twice the inhale, and the hold in the middle forces you to slow down whether you meant to or not.
Four rounds takes about a minute. That is the recommended dose, and it is deliberately short.
Inhale for 4 seconds, hold for 7, then exhale for 8. 4 rounds take about 1 minute.
Sleep, and coming down. The long exhale is the active ingredient. Your heart rate rises slightly as you breathe in and falls as you breathe out, so a breath that spends twice as long going out as coming in parks you in the slowing half of the cycle. Sustained over a few rounds, that tilts you toward rest.
This makes 4-7-8 a poor choice when you need to stay sharp — it is mildly sedating by design. Use box breathing or tactical breathing before something demanding, and save this one for the end of the day, for lying awake at 3am, or for the twenty minutes after a fight.
It is also one of the better tools for a craving or an urge — an impulse you are trying to outlast. A minute of this does not remove the urge, but it reliably outlasts the peak of one.
Weil teaches a specific tongue position, and it is worth keeping: rest the tip of your tongue against the tissue just behind your upper front teeth. You exhale around it, which produces a soft whooshing sound and, more usefully, forces the exhale to be slow.
The eight-second exhale is the part that takes practice. Most people run out of air at five or six on the first attempt. If that happens, do not extend the exhale by squeezing — speed the whole pattern up instead, keeping the ratio: 2-3.5-4 is the same breath at half the tempo, and it works. Slow it down as your capacity grows.
Four rounds, twice a day. That is Weil's prescription and it is unusually specific for a breathing exercise: he recommends not exceeding four rounds in one sitting for the first month, then building to eight.
The reason for the cap is practical rather than dangerous — the long holds can leave beginners lightheaded, and the technique reportedly gets more effective with repetition over weeks, so consistency matters more than volume in any single session.
For sleep specifically, do it lying down, already in bed, lights off. If you are still awake after four rounds, do four more.
This is the section where most articles about 4-7-8 overreach, so here is the honest version.
The mechanism is well supported. Extending the exhale relative to the inhale increases vagal outflow and heart rate variability, via respiratory sinus arrhythmia — the same pathway behind every slow-breathing technique. That is solidly characterised (Lehrer PM, Gevirtz R. Heart rate variability biofeedback: how and why does it work? Front Psychol. 2014;5:756). A systematic review of slow breathing found consistent reductions in physiological arousal and self-reported anxiety across protocols (Zaccaro A, Piarulli A, Laurino M, et al. How Breath-Control Can Change Your Life. Front Hum Neurosci. 2018;12:353).
Cyclic sighing — a close relative with a longer exhale still — beat mindfulness meditation on mood and physiological arousal in a randomised comparison of five-minute daily practices (Balban MY, Neri E, Kogon MM, et al. Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Rep Med. 2023;4(1):100895). That is the strongest recent evidence that a deliberately exhale-weighted breath does something a general relaxation practice does not, though it tested the physiological sigh, not 4-7-8.
What is not established is the specific 4-7-8 ratio, or the claim that it works as a sleep aid in a controlled trial. The "natural tranquilizer" framing is Weil's clinical impression, not a trial result, and the seven-second hold in particular has no evidence distinguishing it from a shorter one.
Honest summary: the direction is right and the mechanism is real. Treat the exact counts as a well-designed, easy-to-remember way of getting a long exhale, not as a formula with evidence behind each number.
The seven-second hold makes this less universally gentle than it looks.
Not medical advice, and not a substitute for a clinician who knows you.
Because they are easy to remember and they produce a 1:2 inhale-to-exhale ratio with a substantial pause. The ratio is doing the work; the specific integers are Weil's teaching device. A 3-5.25-6 pattern is the same breath, scaled, and works the same way.
Weil suggests capping at four for the first month, then up to eight. Practically: if four rounds leave you calm, stop at four. If you are using it to get to sleep and you are still awake, more rounds are fine — people do this for ten minutes without trouble. Build gradually rather than starting at twenty.
Almost certainly inhaling too deeply. A maximal inhale gives you a lot of air to get rid of and tempts you to dump it. Aim for about 70% full on the inhale, and let the exhale out in a thin, steady stream rather than a push. Failing that, halve every count and keep the ratio.
Many people find it does, and the mechanism is plausible. But there is no controlled trial showing it reduces the time to fall asleep, so treat the widely quoted "falls asleep in 60 seconds" claim as marketing. Its real value for sleep is that it gives a racing mind a countable task.
For winding down, yes — the 1:2 ratio pushes harder toward rest than box breathing's 1:1. For focus and composure, box breathing is better, because 4-7-8 makes you slightly drowsy. Neither has been tested against the other.
It is easier to control an eight-second exhale through the mouth, and the tongue position gives you something to exhale around. But nose-out works, and if mouth-breathing bothers you, use the nose. Doing it imperfectly beats not doing it.