Any ideas about the energy feel I constantly have?

I'm going to try to describe this, but I'm honestly not sure how to. I have this vibration feeling just under my skin what seems like all the time. It's like a feeling of energy but it feels like it's vibrating. Oddly, if I get awoken abruptly, I actually feel the energy go CRAZY to the point my whole body shakes. Sorry in advance if this sounds crazy, as I really don't know the best way to describe it.