Is it normal to whip and nae nae in your sleep?

I once was a normal sleeper. I only wiggled around once or twice and did not perform any Dance Moves. However, recently, my great-aunt informed me that I was doing the infamous WHIP and NAE NAE in my slumber. To check that she wasn't Fibbing I recorded myself sleeping.

and Indeed.
I was cranking out some wild moves. I do not know what the cause of this could be and I am taking an appointment to see a specialist next week. Please leave your suggestions.