Most people trying to hold their breath underwater tense up the moment they feel the urge to breathe.

That's the mistake. And it guarantees a shallow dive every time.

Here's what's actually happening: that urge you feel isn't your body running out of oxygen — it's your diaphragm responding to rising CO2 levels. You still have plenty of air. Your body is just panicking.

The fix is CO2 tolerance training. Not longer dives. Not better lungs. Just training your nervous system to stay calm when the alarm goes off.

A simple drill to start:

• Take a full breath and hold

• When you first feel the urge to breathe — that's your trigger point

• Relax your whole body. Hands, jaw, shoulders. Everything.

• Count 10 seconds without tensing

• Breathe out slowly

Do that every day for a week and your comfortable breath-hold time will increase without any other training.

This is the foundation everything else in freediving is built on. If you can't stay calm under pressure, depth and technique don't matter.

I built Deep Dive Academy to help beginners learn this the right way — from breath control basics all the way to your first real dive.