Interactive Nervous System Reset

Box Breathing & 4-7-8 Calm Timer

Select a science-backed breathing cadence below and follow the expanding visual pacer for 90 seconds to lower your heart rate and clear mental clutter.

4s Inhale · 4s Hold · 4s Exhale · 4s Rest

Box Breathing (4-4-4-4)

Tactical Focus & Calm Under Pressure

Ready4s

Press Start to begin your guided breathing session.

Evidence-Based Protocols

Explore Dedicated Breathing Guides

4s Inhale · 4s Hold · 4s Exhale · 4s Rest

Box Breathing (4-4-4-4)

Workday stress, pre-meeting focus, and lowering heart rate in 2 minutes

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4s Inhale · 7s Hold · 8s Exhale

4-7-8 Relaxing Breath

Falling asleep faster, nighttime racing thoughts, and deep relaxation

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5s Inhale · 5s Exhale (6 Breaths/Min)

Coherent Resonance Breathing (5-5)

Midday emotional reset, HRV training, and gentle sustained calm without breath holds

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Double Inhale (3s + 1s) · Long Exhale (6s)

Cyclic Physiological Sigh

Immediate 60-second relief from acute stress, overwhelm, or tension

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4s Inhale · 2s Hold · 4s Exhale

Morning Clarity Breath (4-2-4)

Morning wake-up, afternoon slump at 3 PM, and creative brainstorming

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4s Inhale · 6s Exhale

2-Minute Extended Exhale (4-6)

Email apnea, screen fatigue, and releasing jaw/shoulder tension between tasks

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Why Box Breathing (4-4-4-4) Works

Used by Navy SEALs, surgeons, and first responders, equal-ratio box breathing balances CO₂ levels in the blood and stimulates the vagus nerve, shifting your nervous system from fight-or-flight into calm alertness.