Assessment
CO₂ Tolerance Test
A guided baseline assessment of how calmly you can extend a slow, comfortable exhale.
5 warm-up breaths1 scored exhale
How it works
- 1. Follow the orb for 5 calm warm-up breaths.
- 2. On breath 6, take one gentle inhale when prompted.
- 3. Exhale as slowly and softly as possible, then tap Stop when you need to inhale.
This is a baseline check, not a challenge.