This 4-Minute Breath Test Reveals Your Stress Level

The Modified CO2 Tolerance Test is a breath assessment that measures lung capacity, breath control, and carbon dioxide tolerance — key markers of your respiratory performance and mind-body connection. In this guided assessment, Dr. Justin Ternes walks you through a simple, repeatable process to get reliable baseline results. The test measures how long you can exhale and how long you can hold your breath after exhaling. Try it two or three times in a row to find your average and refine your results. 🧪 What you'll practice: A structured CO2 tolerance assessment you can repeat over time Building consistency, awareness, and deeper control of your breath Tracking your respiratory performance with simple, measurable data 📋 Detailed instructions: https://trueself.health/modified-co2 Credit to Brian Mackenzie for developing the CO2 Tolerance Test: https://www.brianmackenzie.com/ — 🔔 Like, share, and subscribe for more guided breathwork, nervous system training, and mental performance practices. 🌬️ Join the True Self Health Membership — courses, full Breathwork Library, and community: https://trueself.health/membership 🌐 Website: https://trueself.health 📸 Instagram:   / trueselfhealth   📸 Allostasis Performance:   / allostasisperformance   — About Dr. Justin Ternes: Justin Ternes, DPT, is a breathwork and mental performance coach who helps athletes, executives, and high performers regulate their nervous system and unlock peak performance through breath, mind, and body integration. #CO2Tolerance #BreathAssessment #Breathwork #LungCapacity #BreathControl #RespiratoryPerformance #NervousSystem #MentalPerformance #TrueSelfHealth