Ok I am not sure if this is a Medical Condition or not... and I know it's not a disease... but does anyone have any explanation for why I swing my arm as when I sleep?

I'll give a brief example...

When I fall asleep and I'm actually sleeping... My body will act on it's own and my arm will start to swing back and forth hitting the wall and sometimes I hit myself in the face... My arm swings in pretty much every direction... After awhile I would wake up from it... When I am told to stop swinging my arm ( I'm still sleeping at this point ) I suddenly stop... Does anyone have an answer to my problem of what is wrong with me? And please don't say something stupid like try tying your arm down. I want to find out why this is happening... It's been going on since I was about I was a child, and I am 17 now. And it still goes on...

Arms are mentioned a number of times on the following site, and some on the other I hope that it might be of help to you.

Restless legs syndrome - All Sections (printer-friendly) (http://www.nhlbi.nih.gov/health/dci/Diseases/rls/rls_All.html)

https://www.studentresources.net/college/healthzone/PageManager.aspx?dn=studenthealthzone&lic=180&cat_id=20312&article_set=44274&ps=604

BalanceFormula.com :: Get Balanced (http://goyinsuccess.balanceformula.com/land5.php)