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The Valsalva maneuver is a pressurization technique which becomes necessary when there are significant pressure differentials to equalize.
To use non-pressurization methods effectively you must equallize sooner. After a descent of about 4 or 5 feet from your equalized depth, these techniques no longer work well.
The secret- equalize early and often, make that very early and very often. If you can't equalize fast enough, descend slower so that your ears can keep up.
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