Calm
Triangle Breathing
Three equal sides: in, hold, out. Box breathing without the second hold, and easier to keep going.
Also called: Triangular breathing, Triangle breath, 3-3-3 breathing, 4-4-4 breathing, 5-5-5 breathing
Triangle breathing is a three-part breathing pattern: breathe in, hold, breathe out, each for the same count. It is box breathing with the second hold taken out, so it feels lighter and is easier to keep going.
Start at 3 or 4 seconds a side. Within a few minutes your breathing slows and your mind settles. It makes a good first breathing exercise, and schools teach it to students as a calm-down tool[3].
- Pattern
- In 4 s, hold 4 s, out 4 s
- Session
- 5 to 15 minutes
- Good for
- A gentle first breathing practice
- Level
- Beginner
- Origin
- A modern simplification of box breathing, also taught in schools
- Needs
- iPhone or Apple Watch
Try it now
Breathe in 4 s · Hold 4 s · Breathe out 4 s
Follow the circle for a few rounds. In Spoon you can do it from your wrist and see your heart rate respond.
How to do it
- Sit or stand comfortably with a tall, relaxed spine. No special hand position is needed.
- Breathe in through your nose for a count of 4.
- Hold for 4 with your lungs full. Keep it a soft pause, with no squeeze in your throat.
- Breathe out for 4, at about the speed the air came in, through your nose or softly through your mouth.
- Go straight into the next inhale. There is no second hold.
- Repeat for 5 to 10 minutes. When a whole session feels easy, move up to 5 seconds a side.
- Finish on an exhale and let your breathing find its own rhythm.
Benefits
Calm without running short of air
With only one hold, there is no empty-lung pause to push through. You settle in fast and stay relaxed.
Slower breathing in minutes
At 4 seconds a side you take 5 breaths a minute, inside the slow range that raised heart rate variability in studies of healthy people[1].
Easy to learn, easy to teach
Three counts and one shape. Students trace the sides of a triangle as they breathe in, hold and breathe out[3].
A step up to box breathing
Once triangle feels easy, adding the fourth side is a small step.
What the research says
We know of no published study of triangle breathing on its own, so its evidence is borrowed from close relatives.
A 2017 review found that slow breathing, around 4 to 10 breaths a minute, raises heart rate variability and shifts the nervous system toward its resting side in healthy people[1]. At Spoon's three levels, triangle breathing runs at about 4 to 7 breaths a minute.
Box breathing, which adds a second hold, was tested in a 2023 Stanford trial: 108 adults did one of four 5-minute daily practices for 28 days, and anxiety and negative mood fell in the box breathing group, as in every other group[2]. That is a good sign for triangle breathing, not proof, because removing a hold changes the pattern.
Two versions share the name
The common version, and Spoon's, puts the hold after the inhale: in, hold, out. Some classes put it after the exhale instead: in, out, hold. That is a different exercise, with the pause on empty lungs.
The name is also used for a more advanced pranayama with a nostril pinch and a chin lock. If a class feels out of step, listen for where the hold comes and follow that version.
Tips
- Keep all three sides even. Three phases can feel like less work, so the exhale tends to speed up without you noticing.
- Hold in your lungs, not your throat. Think pause, not clamp.
- Trace a triangle in the air with a finger, one side for each phase.
- If even 3 seconds feels like work, try a long, easy exhale with no hold at all: prolonged exhalation.
Safety
- At 3 to 5 seconds a side, triangle breathing is low risk for healthy adults. Stop and breathe normally if you feel lightheaded, dizzy or unwell.
- Don't practice breath holds while driving, swimming or operating machinery.
Triangle Breathing in Spoon
Spoon guides Triangle Breathing on iPhone and Apple Watch, with the hold after the inhale. Pick one of three levels: Beginner (3-3-3), Medium (4-4-4) or Advanced (5-5-5). One control sets all three sides at once, so they always stay equal.
Follow a breathing bubble or a wave on iPhone, or the breathing circle on your Watch. A tone marks each phase change and your Watch taps your wrist. Turn on the voice (Guided Session: Voice) and your iPhone says each phase: "Inhale", "Hold", "Exhale".
- Three levels: 3-3-3, 4-4-4 and 5-5-5 seconds.
- Sessions of 5, 10 or 15 minutes; 10 is the default.
- Phase tones and wrist taps from your Watch.
- Optional voice on iPhone that says the phase words, in English or Spanish.
- With an Apple Watch: live heart rate, then your breath and heart rate on one chart.
- Add it to a playlist, for example as a warm-up before Box Breathing.
Free public beta for iPhone and Apple Watch.
Questions
What is the difference between triangle breathing and box breathing?
Triangle breathing has three phases: in, hold, out. Box breathing has four: in, hold, out, hold. Without the empty-lung pause, triangle breathing is easier to keep going, so it is a good place to start. Once it feels easy, box breathing is the natural next step.
How long should you do triangle breathing?
Five to ten minutes makes a good session, and you'll feel calmer within the first few rounds. Start at 3 or 4 seconds a side. Move up to 5 once a whole session feels easy.
Does the hold come after the inhale or the exhale?
In the common version, after the inhale: breathe in, hold, breathe out. Some teachers put the pause after the exhale instead, which makes it a different exercise. Before you follow a class, listen for where the hold comes. Spoon holds after the inhale.
Is triangle breathing good for kids?
Yes. Schools and counselors teach it to students as a calm-down tool. They trace a triangle while they breathe: in along one side, a hold at the peak, out along the last side. The shape gives them something simple to follow.
What is 5-5-5 breathing?
It is triangle breathing at 5 seconds a side: breathe in for 5, hold for 5, breathe out for 5. That works out to four breaths a minute. In Spoon it is the Advanced level; start at 3 or 4 seconds and work up to it.
Sources
- Russo MA, et al. The physiological effects of slow breathing in the healthy human. Breathe, 2017. doi.org
- Balban MY, et al. Brief structured respiration practices enhance mood and reduce physiological arousal. Cell Reports Medicine, 2023. pmc.ncbi.nlm.nih.gov
- Clayful. Using the Triangle Breathing Tool to Teach Self-Regulation. Clayful, school and family resource. clayfulhealth.com
Updated October 2026. This page is for education, not medical advice. If you have a heart, lung or blood pressure condition, epilepsy, or you are pregnant, ask your doctor before you start a breathing practice with holds or fast breathing.