CO2 Tolerance Training: 3 Methods That Actually Work
Gert Leroy Underwater
4,798 views
🔥 Free CO2 Table Cheat Sheet 👉🏼 https://bit.ly/4eKBRL3
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00:00 What is Tidal Breathing?
02:39 Method 1 - No Contraction Tables
07:00 Method 2 - One/Two Breath Tables
11:44 Method 3 - Reduced Rest Time
16:32 Bonus - Apnea Walking
👋 I'm Gert Leroy, freediving instructor, former national record holder, 1.5M subs on YouTube. I train calm first, numbers second.
Join our program:
Breathwork and CO2 tolerance training for freedivers, spearos & mermaids.
✅ 6-Week Breather Challenge (15 min/day, start here)
✅ Breath-Hold Builder (tables, step by step)
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✅ Advanced Breathwork Toolkit (breathing protocols)
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⚠️ Disclaimer ⚠️
The breath-hold and breathwork exercises in this video are for educational purposes only.
🚗 Dry breath-holding should never be practiced while driving or in any situation where loss of consciousness could be dangerous. When practicing alone, never use a nose clip or mask. 💦 Breath-holding in water should only be done with an experienced buddy who is trained to perform a proper rescue in case of a blackout. ⚠️ Never use the Wim Hof Method or any other hyperventilation-based breathing techniques in the water, as this increases the risk of shallow water blackout. 🏥If you have any medical conditions, including but not limited to heart, lung, or neurological issues, consult a doctor before practicing. By participating, you assume full responsibility for your safety and well-being.
11 Comments
There’s one small thing I don’t quite understand about the first method—the "non-contraction table". With a 2-minute recovery time between breath-holds, CO2 levels return almost to zero (baseline), as you mention later in the video. So, how does this actually build CO2 tolerance if you’re starting each breath-hold with "normal" CO2 levels?
One other thing: is it good to alternate between the three methods during training, or is it better to pick one method (the one that suits you best) and stick with it over the long term? (I’m at a "semi-advanced" level in static apnea, with a time of around 6:30.)
Is there still place for exercises, where you tolerate multiple contractions? Or that is covered by rare PR attempts?
I eventually realised I resented the old school methods
CO2 Tolerance Training: 3 Methods That Actually Work
Gert Leroy Underwater
4,798 views
🔥 Free CO2 Table Cheat Sheet 👉🏼 https://bit.ly/4eKBRL3
💦 Freediver Breathwork (7-day free trial) 👉🏼 http://www.skool.com/underwatersquad
00:00 What is Tidal Breathing?
02:39 Method 1 - No Contraction Tables
07:00 Method 2 - One/Two Breath Tables
11:44 Method 3 - Reduced Rest Time
16:32 Bonus - Apnea Walking
👋 I'm Gert Leroy, freediving instructor, former national record holder, 1.5M subs on YouTube. I train calm first, numbers second.
Join our program:
Breathwork and CO2 tolerance training for freedivers, spearos & mermaids.
✅ 6-Week Breather Challenge (15 min/day, start here)
✅ Breath-Hold Builder (tables, step by step)
✅ Training Library (exercises and routines)
✅ Advanced Breathwork Toolkit (breathing protocols)
✅ Weekly live training + replays
💦 Join now with the 7-day free trial:
👉 http://www.skool.com/underwatersquad
🎓 Want to launch your own Skool community?
Join my FREE group “Start Your Skool”: https://www.skool.com/start-your-skoo...
#Freediving #Breathwork #breathhold
⚠️ Disclaimer ⚠️
The breath-hold and breathwork exercises in this video are for educational purposes only.
🚗 Dry breath-holding should never be practiced while driving or in any situation where loss of consciousness could be dangerous. When practicing alone, never use a nose clip or mask. 💦 Breath-holding in water should only be done with an experienced buddy who is trained to perform a proper rescue in case of a blackout. ⚠️ Never use the Wim Hof Method or any other hyperventilation-based breathing techniques in the water, as this increases the risk of shallow water blackout. 🏥If you have any medical conditions, including but not limited to heart, lung, or neurological issues, consult a doctor before practicing. By participating, you assume full responsibility for your safety and well-being.
💦 Freediver Breathwork (7-day free trial) 👉🏼 http://www.skool.com/underwatersquad