Breeze is a free browser-based breathing exercise app with 15 science-backed techniques for anxiety, focus, sleep, and energy. No download. No account required. Works on iPhone, Android, and desktop instantly.
Box breathing (also called square breathing or 4-4-4-4 breathing) is used by US Navy SEALs, surgeons, and Olympic athletes to achieve instant calm and peak focus. The pattern is simple: inhale for 4 seconds → hold for 4 → exhale for 4 → hold for 4. Repeat 4–8 cycles. It activates the parasympathetic nervous system, lowers cortisol, and sharpens concentration within minutes. Try box breathing free →
The 4-7-8 breathing technique was developed by integrative medicine pioneer Dr. Andrew Weil. Inhale for 4 seconds, hold for 7, exhale for 8. The extended breath-hold builds carbon dioxide tolerance and the 8-second exhale activates the vagus nerve, dramatically slowing heart rate. Clinical users report falling asleep 2–3× faster. Best practised lying down, just before sleep. Try it free in Breeze →
The physiological sigh is the fastest scientifically-proven breathing technique for immediate stress relief. Discovered by Stanford neuroscientist Dr. Andrew Huberman, it involves a double inhale through the nose followed by a long, slow exhale through the mouth. It works in under 30 seconds by re-inflating collapsed alveoli and rapidly offloading CO₂ — the primary driver of the physical stress response. Perfect for panic attacks, exam nerves, or pre-presentation anxiety.
Wim Hof breathing consists of 30 rapid, deep breaths followed by a natural exhale-pause, then a deep recovery breath. The technique floods the body with oxygen, creates a mild alkaline shift, releases epinephrine, and has been shown in peer-reviewed studies to suppress inflammatory markers. Best used in the morning for an energy surge. Available free in the Breeze breathing app.
Resonance breathing (also called coherence breathing) is performed at exactly 5–6 breaths per minute — a 5-second inhale and 5-second exhale. This synchronises heart rate variability (HRV) with the respiratory cycle, creating a state of physiological coherence. A landmark 2021 study in JAMA Internal Medicine found that 5–10 minutes of slow breathing daily reduced systolic blood pressure as effectively as medication in some hypertensive patients.
Breeze includes 15 guided breathing exercises across 6 categories: Calm, Focus, Energy, Sleep, Anxiety, and Kids. Every session is guided with a visual breathing circle and optional voice cues. The app tracks your daily breathing streak and sends gentle reminders so you never miss a session. Studies show that consistent daily breathing practice of just 5 minutes reduces baseline anxiety by up to 44% over 8 weeks.
Breeze Premium enhances every session with 432Hz binaural beats — a 10Hz alpha-wave frequency difference (432Hz left ear, 442Hz right ear) that promotes relaxed focus and reduces anxiety. Premium also includes Rain, Ocean, and Forest ambient sounds — all synthesised locally with no streaming required. Multiple peer-reviewed studies confirm binaural beats reduce anxiety and improve working memory performance when used with headphones during breathing sessions.
Breeze — breeze.norehan.dev · Free guided breathing exercises for anxiety, focus and sleep · Box Breathing · 4-7-8 Breathing · Physiological Sigh · Wim Hof Breathing