Frenzel Maneuver

An equalization technique that uses the tongue as a piston to push air into the middle ears, gentler and more efficient than the Valsalva maneuver.

The Frenzel maneuver equalizes the middle ears by closing the glottis, pinching the nose, and driving the back of the tongue upward like a piston. That compresses the small pocket of air in the throat and forces it up the Eustachian tubes. Unlike the Valsalva maneuver it does not use the lungs at all, so it needs no exhalation effort, works in any body position, and delivers a quick, controlled puff of pressure to the ears.

Frenzel matters most in freediving, where lung volume shrinks with depth and a Valsalva becomes ineffective and risky, but scuba divers benefit too. It is faster, easier to repeat every meter, and far less likely to overpressurize the inner ear. The learning curve is real: most people first find the motion by saying the letter K or starting to swallow, then freezing the tongue mid-motion. Once learned it becomes automatic.

If you log frequent ear trouble on descents, switching from Valsalva to Frenzel is one of the most effective fixes, and many instructors teach it during advanced or freediving courses. Divers who master it often end up equalizing hands-free by opening the Eustachian tubes with jaw and soft palate control alone. That level of control keeps long, multi-stop descents relaxed and leaves both hands free for the camera or the descent line.