Does sucking the helium out of balloons damage your brain?!
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Helium displaces oxygen, so, when you take a big breath of helium, it's the same as not taking a breath at all. Helium in its self is not harmful. It's the not breathing part while you are playing with that lung full of helium.
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Yeah, and it will mess up your voice as well.
Only if the back of your head caves in!
nop
Only if you suck so much that you can't breathe anymore. The lack of oxygen is what will bramage your dain.
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