I flap my arms at random

Okay hear me out here. At random moments I will feel the intense need to either flap my arms up and down or side to side with both my hands clenched into fists. I assumed for the longest time that it was because I have too much adrenaline in my body and it's the only way I can get rid of it, but I'm not so sure. Even in moments when I am not excited I will randomly feel the need to do this. I walked into the bathroom the other day at my college and I felt the intense need to do it.

Any idea what this means? Is it my adrenaline like I assumed it was?

I understand that it is a weird question to ask so don't feel bad if you don't have an answer for me

I also get random "shivers" but it's not normal shivers. It's like my whole body is going through some sort of spazm