The tests that measure your breath. BOLT, resting rate, exhale control, power capacity.
BOLT stands for Body Oxygen Level Test — a misleading name, since it actually measures CO₂ tolerance. Here is what your BOLT score means and what to do with it.
A one-minute count that reveals your baseline breathing rhythm — a stronger predictor of resting nervous-system tone than most people realise.
A short assessment that measures how long you can sustain a controlled, quiet exhale — a proxy for diaphragm control and breath composure under load.
A short assessment that estimates your readiness for power-breathing rounds and sets the pacing for future practice.
A short home test that estimates CO₂ tolerance from an exhale-then-inhale-hold time. Related to BOLT but not identical — here is how they differ.
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