Stop counting. Breathe, then hold.
CO2 and O2 tables for dry static training. The screen, sound and vibration tell you when to inhale, exhale and hold — you just follow.
4
Same hold every round, shorter rest each time. Builds tolerance to the urge to breathe.
Tables are built from this. Don’t know it yet? Use “Measure PB”.
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Total 17:15
Rest can’t go below 0:30 — that’s the time recovery breaths and your final breath need.
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