Does anyone know this "magic trick"????

Question

I remember this trick that we played on the playground in the late 80'. It had something to with holding or pushing down on one kids arms for like 1 minute, then when you releas them, the kids drops his arms to his sides and they float up on their own accord. Who remember the correct sequence to do this trick. I really want to show my own elementary age kids and can't remember the whole thing. Thanks a bunch!!!

Answer 1

I was born after that.

Answer 2

okay you stand in a doorway and press your hands against the sides for one minute. then you suddenly step out and your arms should start to float up.