I bang my head on a soft chair to music. Is this normal?

Ever since I was little, I bang my head to music on a nice soft chair. Sometimes i go really hard and my mom thinks its bad for my brain. Its harder t

Ever since I was little, I bang my head to music on a nice soft chair. Sometimes i go really hard and my mom thinks its bad for my brain. It's harder to concentrate now and i get dizzy often. Is it normal? I sit pretzel style and just bang my back/ head on the chair. It calms me down and i love it! I do this 7 hours a day. 2 in the morning before school, and 4/5 hours after school/ before i go to bed.

or:Ever since I was little, I bang my head to music on a nice soft chair. Sometimes i go really hard and my mom thinks its bad for my brain. It's harder to concentrate now and i get dizzy often. Is it normal? I sit pretzel style and just bang my back/ head on the chair. It calms me down and i love it! I do this 7 hours a day. 2 in the morning before school, and 4/5 hours after school/ before i go to bed.

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