There is no air tight barrier in between my two cheeks, so how am I controlling the air in my mouth and directing it to one specific cheek? The deflated cheek is still floppy, so it’s not like I’m tensing a muscle to stop it inflating.
Also works if I have a mouth full of water, and can also be directed to top and bottom lips.
Thank you.
In: Biology
To stop the air flowing to one side of your mouth, you’re contracting facial muscles which are stopping that cheek from expanding (try it now – inflate your right cheek and rub your tongue against your left cheek; you’ll feel the tension). If you completely relax all facial muscles, the air will move across and both sides will be slightly inflated.
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