Key takeaways
- 1Athletes have four breathing jobs: composure, efficiency, recovery, priming.
- 2Each has a different tool. There is no single "athletic breathwork" answer.
- 3CO₂ tolerance is the shared training target that improves all four.
- 4Off-season is when to build capacity. In-season is when to apply it.
The four jobs
Athletes need four distinct breathing tools. Composure under pressure (between points, at foul lines, during penalty kicks). Efficiency under load (delivering oxygen without wasted effort during the activity). Recovery between efforts (bringing HR and arousal back down as fast as possible). Priming before max efforts (raising arousal safely before a peak effort).
Composure
Box breathing. Between-point resets, at the free-throw line, during timeouts. Equal-count structure holds composure without sedation. Applies to nearly every sport with pauses.
Efficiency
Cadence breathing. Lock your breath to your stride, stroke, or pedal. 3:2 easy, 2:2 threshold, 2:1 max. Nasal breathing up to threshold; mouth breathing beyond. Nasal training extends the threshold upward over months.
Recovery
Coherence 5.5-5.5 post-session. Fifteen to twenty minutes. HRV amplitude peaks at this rate, which supports parasympathetic rebound and recovery.
Priming
Power breathing — two to three rounds — pre-training or pre-competition. Skip if you have any cardiovascular contraindications. Never in water. The Performance Priming Protocol structures this properly.
The shared training target
CO₂ tolerance underlies all four. Higher CO₂ tolerance means longer comfortable exhales, higher-effort nasal breathing, less air hunger during efforts, and better retention capacity. The CO₂ Capacity Builder is the foundational off-season program.