Breathing Exercise Timer

Follow the circle — breathe in as it expands, out as it contracts

Rounds:

About Breathing Exercises

Box Breathing

Used by Navy SEALs and athletes, box breathing (4-4-4-4) activates the parasympathetic nervous system to reduce stress and sharpen focus.

4-7-8 Breathing

Developed by Dr. Andrew Weil, this technique is highly effective for falling asleep, managing anxiety, and calming acute stress responses.

Physiological Sigh

A double-inhale followed by a long exhale — the fastest way to reduce stress in real-time, backed by Stanford neuroscience research.

Deep Breathing

Simple diaphragmatic breathing lowers heart rate, reduces cortisol levels, and is the foundation of most meditation and mindfulness practices.

What Is a Breathing Exercise Timer?

A breathing exercise timer guides you through timed inhale, hold, and exhale phases using visual cues — so you can focus entirely on your breath rather than counting seconds in your head. This tool animates an expanding and contracting circle that grows as you inhale and shrinks as you exhale, making it easy to follow any breathing pattern intuitively.

Choose from five research-backed breathing techniques — Box Breathing, 4-7-8, Deep Breathing, 5-5-5, and Physiological Sigh — or set fully custom timing. Sessions run for 1–30 rounds, and the background colour shifts with each phase to reinforce the breathing rhythm.

How to Use the Breathing Timer

Select a breathing pattern — or choose Custom to set your own inhale, hold, and exhale durations.
Set the number of rounds (1–30) using the +/− buttons. Each round is one full breath cycle.
Press Start. The circle expands during inhale, holds steady during holds, and contracts during exhale.
Follow the animated circle and the phase label (Inhale / Hold / Exhale) to breathe in sync.
Press Pause to take a break at any time, then Continue to resume.
After all rounds complete, the session ends automatically. Press Start Again to repeat.

When to Use Guided Breathing Exercises

Stress and anxiety relief — Slow, controlled breathing activates the parasympathetic nervous system, reducing cortisol and heart rate within minutes. Box breathing and 4-7-8 are particularly effective for acute stress.
Before sleep — The 4-7-8 technique is widely used to calm an overactive mind before bed. A short 5-round session can help you fall asleep faster by slowing your heart rate and shifting focus away from thoughts.
Focus and performance — Athletes, Navy SEALs, and performers use box breathing before high-pressure situations to enter a calm, focused state without losing alertness.
Meditation and mindfulness — Breath awareness is the foundation of most mindfulness practices. Using a timer removes the cognitive load of counting so you can direct full attention to the breath itself.
Panic and anxiety attacks — The Physiological Sigh — a double inhale followed by a long exhale — is the fastest-acting technique for reducing physiological arousal in the moment, according to Stanford research.
Daily wellness routine — A 5-minute breathing session in the morning or after work is a low-effort habit with measurable effects on mood, blood pressure, and mental clarity over time.

Frequently Asked Questions

What is box breathing?

Box breathing (4-4-4-4) involves inhaling for 4 seconds, holding for 4, exhaling for 4, and holding again for 4. The equal four-count pattern creates a "box" shape. It is used by military personnel, athletes, and therapists to rapidly reduce stress and restore calm focus.

How does 4-7-8 breathing work?

Developed by Dr. Andrew Weil, 4-7-8 breathing involves inhaling for 4 seconds, holding the breath for 7 seconds, and exhaling slowly for 8 seconds. The extended exhale activates the vagus nerve and triggers a relaxation response, making it especially effective for anxiety and pre-sleep wind-down.

What is the Physiological Sigh?

The Physiological Sigh involves a double inhale through the nose (a full inhale, then a second short sniff to fully inflate the lungs), followed by a long exhale through the mouth. Research from Stanford University found it is the fastest known method to reduce physiological stress in real time — often in just one or two breaths.

How many rounds should I do?

For most techniques, 5–10 rounds is a good starting point — about 2–5 minutes depending on the pattern. You can feel benefits from as little as 3 rounds. For sleep preparation, 10 rounds of 4-7-8 is commonly recommended. Increase rounds gradually as you build a habit.

Can I use a custom breathing pattern?

Yes. Select Custom and enter your own inhale, hold-in, exhale, and hold-out durations in seconds. Hold values can be set to 0 to skip that phase entirely. This lets you follow any specific protocol prescribed by a therapist or wellness practitioner.

Is breathing through the nose or mouth better?

For most breathing exercises, inhaling through the nose is recommended — it filters, warms, and humidifies air and activates the diaphragm more effectively. Exhaling through the mouth (especially for 4-7-8 and the Physiological Sigh) releases tension more fully. Box breathing and 5-5-5 can be done entirely through the nose.

Are there any risks to these breathing exercises?

These techniques are safe for most healthy adults. If you feel dizzy or lightheaded, stop and breathe normally — this can happen if you are over-breathing (hyperventilating). Avoid breath-holds if you are pregnant or have respiratory conditions. Consult a doctor if you have any concerns.