2 min
Carbon Dioxide is the metabolic stress messenger of the human body. Your body is constantly predicting how much energy you need to deal with stress and how much more stress you can take! Get ahead of the curve with this powerful metric for stress and resilience.
The CO2 Tolerance Test is a gateway to understanding how you respond to stress. Originally used by freedivers and developed through extensive trials and applications, this test has been proven to be a powerful indicator of stress response, autonomic control, and breath mechanics.
Carbon Dioxide (CO2) tolerance is important because:
Follow the directions below to find your current CO2 Tolerance. Then you can use your time to calculate personalized Apnea and Cadence Breathing Protocols. Retest every 2-3 weeks to measure your progress and calibrate your personal protocol to what works for you and how you’re feeling.
>80 seconds –> Elite. Reflects an advanced pulmonary adaptation, excellent motor control, and low arousal.
60-80 seconds –> Advanced. Reflects a healthy pulmonary system, good motor control, and relatively low arousal.
40-60 seconds –> Intermediate. This range generally improves quickly with a focus on CO2 tolerance training.
20-40 seconds –> Average. Moderate to high arousal state. Breathing mechanics need improvement.
<20 seconds –> Poor. Very high arousal and stress sensitivity.