I can’t do it underwater no matter what 

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I've had a bit of a cold over the last few days, and being able to flex my jaw muscles to alleviate pressure in my ear has been invaluable.
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can’t believe I’m just learning about the existence of this
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But, it's not nearly as powerful as holding my nose and blowing.
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Do you mean perform a valsalva maneuver or https://en.wikipedia.org/wiki/Valsalva_maneuver … equalize pressure hands-free?
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Hands free! Altho for serious congestion issues, hands may be required
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Yep. It's really easy. All you have to do is just gulp.
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Whoa wait, why is this so common? Do people not understand the question, or it’s way more common than earlier reports suggest, or there’s a crazy selection effect? https://twitter.com/williamaeden/status/1171189023638872064?s=21 …https://twitter.com/WilliamAEden/status/1171189023638872064 …
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I just swallow and it does this for me. Is this what is meant or something different?
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