Sounds like a little bit of ptsd and/or anxiety
After I got back from Afghanistan in 2007 I used to wake up in the middle of the night and start going through the motions of a fire mission (shooting them big ass artillery cannons).
I think getting woken up by mortars and rockets being shot at us a couple nights a week for 16 months in Afghanistan and 12 months in Iraq had a permanent effect like my body won't let me relax cause it thinks it's gonna have to get up anyway and start pumping adrenaline.
Maybe I should look in to xanax or something.