Interactive Breath Exercises
Guided breath holds with real-time timers, automatic logging, and visual progress tracking. Experience the CO₂ handle with precision.
Safety first
Never do breath holds in water, while driving, or anywhere you could fall. If you feel dizzy or panicky, stop immediately and breathe normally. Keep it gentle. This is about sensing the regulator — not proving anything.
Choose Your Exercise
Click an exercise to begin guided practice with automatic timing and logging.
Quick CO₂ Test
60-second exhale-hold experiment to feel the CO₂ signal
A — Exhale Hold (Still)
Baseline exhale hold while stationary
B — Inhale Hold (Still)
Full inhale hold (usually longer due to buffer)
C — Exhale Hold (Moving)
Exhale hold while walking/marching (demand rises)
D — Inhale Hold (Moving)
Inhale hold while moving (shorter than still)
Your Breath Records
Logged exercises appear here. Compare your results to see how buffer and demand affect hold time.
No exercises completed yet. Start with the Quick CO₂ Test above!
Understanding Your Results
Typical patterns:
- Inhale holds usually last longer than exhale holds (more lung buffer)
- Still holds usually last longer than moving holds (demand increases CO₂ production)
- The first reflex (diaphragm jump) is the signal — that's when to stop, not when you can't hold any longer
- Shorter times aren't "bad" — they show the regulator is working correctly
The goal: make the CO₂ coupling visible, not to maximize hold time.