Free guided breathwork
CO₂ Tolerance — Level 2
A harder progression on CO₂ tolerance.
4-0-6-1210 minButeykoadvanced
Inhale4s
10:16 leftMuted preview
How to practice
4-0-6-12 breathing
Sustained holdOut training shifts the chemoreceptor threshold over 30+ days.
Sit comfortably, breathe through the nose when possible, and keep the effort gentle. Stop if you feel dizzy. Do not practice intense breath holds near water or while driving.
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