Breathing Parameters
Choose a respiration mode below. Sit in a comfortable posture, relax your shoulders, and breathe through your nose, expanding your diaphragm.
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The Physiology of Diaphragmatic Breathwork
Your heart rate and respiratory rate are linked through the autonomic nervous system. When you inhale, your diaphragm contracts and moves downward, decreasing pressure in your chest cavity. This slightly accelerates your heart rate. When you exhale, your diaphragm relaxes and moves upward, compressing the chest cavity and stimulating the vagus nerve. The vagus nerve releases acetylcholine, which immediately slows your heart rate.
By intentionally extending your exhalation phase (such as in the 4-7-8 sequence), you artificially prolong vagal stimulation. This triggers a cascade that reduces blood pressure, lowers vascular resistance, decreases cortisol synthesis, and switches your nervous system from a sympathetic state of alert to a parasympathetic state of recovery.
Comparison of Breathing Respiration Protocols
| Respiration Protocol | Cycle Phases (Seconds) | Primary Nervous Influence | Primary Use Case |
|---|---|---|---|
| Box Breathing | 4s Inhale / 4s Hold / 4s Exhale / 4s Hold | Stabilization & Balance | Resets cognitive focus, calms panic, used by military and first responders |
| 4-7-8 Breathing | 4s Inhale / 7s Hold / 8s Exhale | Strong Parasympathetic Dominance | Soothes anxiety, lowers blood pressure, aids sleep induction |
| Coherent Breathing | 5s Inhale / 5s Exhale (Continuous) | Cardiovascular Resonance | Improves heart rate variability (HRV), supports long-term emotional regulation |
Respiration Guidelines
- Diaphragmatic Focus: Place one hand on your chest and the other on your stomach. When you inhale, the hand on your stomach should rise, while the hand on your chest remains mostly stationary. This ensures deep diaphragmatic lung filling.
- Breathe Through Nose: Nasal inhalation filters air, regulates volume, and increases nitric oxide delivery to the lungs, enhancing vascular dilatation.
- Do Not Force: If holding your breath triggers mild panic or discomfort, stop immediately. Return to your natural breathing rhythm and gradually work your way up to longer holds.