Calm under load
CO₂ tolerance training shifts your air-hunger alarm so you hold composure—on the field or in the boardroom.
BREATHWORK BY TAVI CASTRO
Elite breath training for athletes, executives, and founders. Build CO₂ tolerance, sharpen focus, and accelerate recovery—using protocols born from world-class freediving.
CO₂ tolerance training shifts your air-hunger alarm so you hold composure—on the field or in the boardroom.
Coherent breathing entrains HRV and steadies the prefrontal cortex for clear decisions when stakes rise.
Exhale holds deliver controlled hormesis—more resilience and faster recovery without overtraining.
Less noise. More power.
Breath is the simplest tool you own—and the fastest way to change how you perform.
Master your state on demand — shift instantly between calm, focus, or energy depending on what life requires.
Reset your nervous system — dissolve tension, reduce anxiety, and restore inner equilibrium.
Expand lung capacity and oxygen efficiency — enhancing physical endurance and mental clarity.
Condition your body for resilience — train your physiology to stay composed under pressure, both in and out of the water.
Improve sleep and recovery — activate deep rest and cellular regeneration through controlled breathing rhythms.
Reclaim presence — reconnect with your body, emotions, and environment through mindful control of your inner rhythm.
Elite athletes, founders, executives, teams in negotiation or high-pressure cycles, and creators preparing for stage or camera.
60–90 minutes • On-site or virtual • Up to 30
Objective-led session with printable routines and post-training guidance.
4 weeks • Weekly coaching • Testing & tracking
CO₂ training, HRV routines, breath-ups & recovery tailored to your sport.
Apply for CoachingBreathwork • Cenotes • Movement
Fully planned VIP days in Tulum with freediving and wellness activities.
Inquire for VIP DaysTulum / BAJA california
• 7 days / 6 nights • Luxury villa
Daily breathwork, cenote freediving, chef-prepared meals, and pro media.
Inquire About RetreatsGear + cenote access included
Technique, equalization, breath-ups & safety tailored to you.
On-demand lessons & guided sessions
Foundations through advanced protocols for busy pros. Join the waitlist.
Book Online session