Measure your current max breath hold
to generate personalised tables for you to train.
Breathe normally for 2 minutes before this hold. Sit comfortably.
0:00.00
Press HOLD to start the timer — press again to stop
Your max breath hold time is
Ready to build your training tables?
Retake the test
Your personalised breath hold tables
Start with the CO2 table. Move to O2 once it feels manageable.
CO2 Table
Hold stays the same. Rest shortens each round — this builds CO2 tolerance.
Max hold
Hold
Rest
2m→15s
Rounds
8
| Round | Hold | Breathe normally |
|---|
O2 Table
Rest stays the same. Hold increases each round — this builds oxygen tolerance.
Max hold
Hold range
Rest
2m fixed
Rounds
8
| Round | Hold | Rest (breathe normally) |
|---|
CO2 Table — Training
Round 1 of 8
Breathe normally and press HOLD when you're ready to start.
CO2 TABLE
| Round | Hold | Rest |
|---|
Session complete! 🌊
Great work. Consistency is what builds CO2 tolerance. Come back tomorrow and do it again.
Retake the breath hold test
BUILD YOUR CO2/O2 TOLERANCE
Start practicing in calm state sitting comfortably. Once feeling settled,
add a light jog or jumping jacks before the practice.
add a light jog or jumping jacks before the practice.