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Relax 4–6
Pattern
Cycles
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Duration
Soft Breathe offers four scientifically validated breathing patterns with a real-time visual guide. Select a pattern, choose your cycle count, and begin immediately. No account, no app download, no cost.
The Relax 4-6 pattern uses a simple principle: exhaling for longer than you inhale activates the parasympathetic nervous system via the vagus nerve. By inhaling for 4 seconds and exhaling for 6, you create a 1:1.5 ratio that research shows is optimal for reducing cortisol and lowering heart rate without drowsiness. This makes it ideal for a midday reset at work, after a stressful meeting, or any time you need to shift from reactive to calm without losing alertness. Five cycles (approximately 50 seconds) is enough to produce a measurable physiological shift.
Box breathing — also called square breathing or tactical breathing — divides the breath into four equal phases: inhale (4s), hold (4s), exhale (4s), hold (4s). This pattern is used by Navy SEALs, surgeons, and competitive athletes to maintain cognitive clarity under extreme stress. The equal-duration phases synchronise heart rate variability (HRV) at approximately 6 breaths per minute, creating a state of physiological coherence that enhances decision-making and emotional regulation. Research from the University of Brussels found this coherence state measurably improves performance under pressure. Use it before presentations, exams, difficult conversations, or any high-stakes moment.
Developed from the pranayamic tradition of breath retention (kumbhaka), the 4-7-8 technique (inhale 4s, hold 7s, exhale 8s) is the most effective evidence-based breathing pattern for sleep onset. The extended 8-second exhale maximises vagal tone, while the 7-second hold builds CO₂ tolerance through the Bohr Effect, improving cellular oxygenation and quieting the default mode network — the brain region responsible for nighttime rumination. Controlled studies have shown this pattern reduces sleep latency (time to fall asleep) by an average of 20 minutes. Soft Breathe's dark-room-optimised visual guide lets you follow the rhythm without needing to count. Practice 4 cycles for relaxation or 8 cycles for deep sleep preparation.
The Energise 6-2 pattern inverts the standard relaxation ratio: a long 6-second inhale followed by a short 2-second exhale activates the sympathetic nervous system in a controlled way. This increases oxygen intake, raises heart rate slightly, and stimulates alertness — making it ideal for morning activation, afternoon energy dips, or pre-exercise preparation. Unlike caffeine, which triggers cortisol spikes, this breathing pattern achieves alertness through respiratory mechanics that the body can regulate naturally. Three to five cycles is sufficient for a noticeable energy boost without overstimulation.
Cyclic sighing — or the physiological sigh — is a breathing pattern built around a double inhale followed by a long, full exhale. The first inhale fills your lungs most of the way, and the second shorter inhale generates enough pressure to re-inflate collapsed alveoli (tiny air sacs). The long exhale extends the heart-rate-deceleration phase, strengthening the vagus nerve's signal to slow the cardiovascular system. Research from Stanford Medicine found that five minutes of daily cyclic sighing produced a significantly greater increase in positive affect and mood enhancement than mindfulness meditation.