Breath and CO2 Tolerance
When stress tightens your chest, carbon dioxide sensitivity amplifies discomfort and attention frays. Practicing slow, elongated exhales trains calmer physiology. Try one minute of nasal box breathing—four in, four hold, four out, four hold—before work sprints. For a quick downshift, double the length of your exhale compared to inhale. These patterns are portable and discreet, offering rapid clarity without equipment. Over time, you’ll notice fewer spikes and smoother cognitive control.