Zone 2 Training and Nose Breathing: Build Your Engine | CFBC

Zone 2 Training and Nose Breathing: Build Your Engine | CFBC from CrossFit BC. A coach-built guide to Zone 2 training and nose breathing: the talk test, heart rate zones, workouts for CrossFit and HYROX, and how to stay aerobic without overdoing it.

This is a long-form CrossFit BC reference piece. We cite the research we lean on, show how we apply it with members in the gym, and keep the practical takeaways at the top so you can act on them the same week.