Almost everyone learns to clear their ears the way they did on an airplane or in a swimming pool: pinch the nose and push. That is the Valsalva maneuver, and it works fine near the surface. For freediving, though, most divers eventually switch to Frenzel. Understanding why makes the transition feel less mysterious.
How Valsalva works
With Valsalva you pinch your nose and gently push air up from your chest by tensing your abdomen and breathing muscles against a closed mouth. It is intuitive and effective in shallow water. The limitation is fundamental: it depends on having air in your lungs that you can push.
Why it stops working at depth
As you descend, water pressure compresses your lungs. Past a certain point there simply is not enough movable air to push upward, and Valsalva fails right when you need equalization most. It also requires muscular effort that disturbs your relaxation and can interrupt a smooth, head-down freefall.
- Valsalva: chest and abdomen driven, easy to learn, limited to shallow depths
- Frenzel: tongue driven, works head-down, keeps working as lungs compress
The depth ceiling
Because Valsalva relies on lung air, divers commonly hit a wall where they simply cannot clear anymore. Frenzel sidesteps this by pumping a trapped air pocket with the tongue instead.
What this means for you
If you are just snorkeling or staying shallow, Valsalva is perfectly serviceable. If you intend to progress in depth freediving, it is worth investing early in Frenzel so you are not forced to relearn equalization later under pressure. Many divers find the switch easier before bad Valsalva habits set in.
Forcing Valsalva strains your ears
Hard, repeated Valsalva pushes can over-pressurize and irritate your middle ear. Whatever method you use, equalize gently and early rather than waiting until you feel pain.
Never push through ear pain
Pain is a stop signal, not a challenge. If an ear will not clear, ascend until it does, and never freedive at depth without a trained buddy watching you.
Both methods have their place, but the path of progression points toward Frenzel. Learn it gently, practise it dry, and your ears will thank you as the water deepens.