Simulated altitude breathing drills before training
A 10-minute pre-workout hypoxic breathing sequence primes the oxygen-delivery system before exercise begins.
Key takeaways
- What it is: A 10-minute pre-workout hypoxic breathing sequence primes the oxygen-delivery system before exercise begins.
- Why it works: Pre-exercise breath holds lower blood O2 saturation modestly, triggering spleen contraction and releasing stored red blood cells into circulation before the workout begins. This transiently increases oxygen-carrying capacity and primes chemoreceptor sensitivity, producing a small but real ergogenic effect in the first 20-30 minutes of subsequent exercise.
- Evidence: Plausible mechanism, limited direct outcome data.
- Avoid: Skipping the slow nasal breathing cool-down after the hypoxic drills and going directly into intense exercise — this can cause dizziness and blunts the calm focus the sequence is designed to create.
Why it works
Pre-exercise breath holds lower blood O2 saturation modestly, triggering spleen contraction and releasing stored red blood cells into circulation before the workout begins. This transiently increases oxygen-carrying capacity and primes chemoreceptor sensitivity, producing a small but real ergogenic effect in the first 20-30 minutes of subsequent exercise.
How to do it
- 1Ten minutes before a workout, perform 5 rounds of: normal nasal exhale → 20-30 step breath-hold walk → rest 60 seconds.
- 2After the final hold, do 3 minutes of slow nasal breathing (5 seconds in, 5 seconds out).
- 3Begin your warmup. Do not eat within 90 minutes of this sequence.
- 4Log perceived exertion at the same absolute intensity across weeks to detect the adaptation.
What the evidence says
MechanisticAcute spleen contraction during breath holds is well established; pre-exercise hypoxic breath holds as an ergogenic protocol have preliminary support in breath-hold sports. Transfer to general athletic performance is mechanistically plausible but not confirmed by large general-population RCTs.
Honest caveat: Most supporting evidence comes from diving physiology; application to running, cycling, or strength training is extrapolated. Individual response varies considerably.
Common mistake
Skipping the slow nasal breathing cool-down after the hypoxic drills and going directly into intense exercise — this can cause dizziness and blunts the calm focus the sequence is designed to create.
IX Coach sequences the altitude drill into your pre-workout routine and cross-references perceived exertion data from subsequent sessions to track whether the ergogenic effect is showing up for you.
Practice this with IX Coach →