This reminds me of physics class.  The guy from “Impossible Science” had someone stand in a doorway and push the sides of her arms “out” against the door jams for 30 seconds. 

When she walked away, her arms rose on their own.  It’s called “involuntary muscle movement.”

@impossiblescience

Arms in the air like you just don’t care! Feel your arms ##levitating with this phenomenon! ##tiktokpartner ##learnontiktok ##summerschool ##summerworkout

♬ ADVENTURE TIME – Wild Heart

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