breathing
The CrossFit Nasal Breathing Protocol: Your Bottleneck Is CO₂ Tolerance
Read time: 8 minutes. If you redline on every Fran, gas out at minute 6 of a METCON, and need 4 minutes to recover between sets of thrusters — your bottleneck isn't cardio. It's CO₂ tolerance. The...
Why Nasal Breathing Feels Like A Mild High — The CO₂ Cerebral Vasodilation Mechanism
Estimated read: 6 minutes. The most counterintuitive mechanism in human performance physiology — and why nasal breathers feel different than mouth breathers, every single day. The forgotten side e...