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Pressure equalization in freediving works differently than many scuba divers or snorkelers do. Here you will learn the difference between the Frenzel and Valsalva maneuvers and can test yourself whether you already have mastered pressure equalization intuitively. More information and courses at: www.ok-freediving.com Video content: 00:00 Intro 00:17 Why do you need pressure equalization? 01:00 This is what happens during pressure equalization 01:56 Who needs to learn pressure equalization? 03:06 The Valsalva maneuver 04:05 The Frenzel pressure equalization 06:36 Testing the Frenzel technique 07:10 What if it doesn't work?