100% Free & Open Access
The Core Breathwork Guide
No subscriptions. No required emails. No countdown ads. These foundational breathing patterns directly stimulate your vagus nerve to reduce cortisol, improve focus, and restore calm.
Start Box Breathing ⚡
Why Free? vs Calm →
1. Box Breathing
4 - 4 - 4 - 4
Also known as square breathing, this technique is utilized by Navy SEALs, first responders, and elite athletes to maintain laser focus under intense pressure.
Cadence Cycle
• Inhale: 4 seconds through nose into belly
• Hold: 4 seconds with lungs full
• Exhale: 4 seconds smoothly through mouth
• Hold: 4 seconds with lungs empty
Practice Box Breathing (3 min) →
2. Coherent (Resonance)
6 - 6 Ratio
Breathing at approximately 5 to 5.5 breaths per minute synchronizes heart rate variability (HRV), blood pressure rhythms, and brainwave activity for peak nervous system balance.
Cadence Cycle
• Inhale: 6 seconds smoothly
• Exhale: 6 seconds uninterrupted
Practice Coherent Breathing →
3. Physiological Sigh
Double Inhale + Long Exhale
Popularized by neuroscientist Dr. Andrew Huberman, the physiological sigh reinflates collapsed alveoli in the lungs and rapidly exhausts carbon dioxide, halting acute panic in seconds.
Cadence Cycle
• Inhale: 3 seconds through nose
• Top-up Inhale: Quick sharp inhale at peak
• Exhale: 8 seconds slow exhale through mouth
Practice Physiological Sigh →
4. Deep Belly (Diaphragmatic)
4 - 6 Ratio
Longer exhales than inhales shift the autonomic nervous system into the parasympathetic "rest and digest" state. Ideal before bed or following a stressful meeting.
Practice Deep Belly Breathing →
Frequently Asked Questions
Is Blabr really 100% free?
Yes! All core breathing exercises above are completely free forever. There are zero advertisements, zero forced signups, and zero tracking cookies.
Does the screen stay on during long sessions?
Yes. Blabr includes built-in Screen Wake Lock technology so your smartphone display will not dim or sleep during 3, 5, or 10-minute sessions.