I jump when I am awakened. Almost every time.
Typically when my wife comes in to wake me up if I'm still asleep I jump as if I've been scared. It's always bothered her because she thinks that I should be on him and just be peaceful and wake up gracefully with a smile and all that.
I jump and sometimes grunt as if I'm scared and about to attack.
I think I figured out why. From what I've read during sleep the brain fluids drain or rents in the connections between everything or loosened so that dreams can happen and then neurons and pathways can be washed out of certain waste materials. Because everything was looser and more fluid but different fluid also seems like the amygdala or what is sometimes called the lizard brain has much more sway over what the body does. There's no filter over it and so the fight or flight response happens more easily. And because my awareness is down because all the connections are loosened and relaxed my wife can sneak up on me or not even try and suddenly appear inside my circle of awareness and I get that jolt of all we get to run and my body starts to do that before I go now where okay relax.
It's a theory. Don't know if it's right but that's what I've read and that seems to fit my behavior. What's funny is this morning I did it right after waking up. I was standing in the bathroom doing my business. My wife suddenly walked in and I jumped as if I was scared and I was about to leap in action. I think it's the same thing the connections just hadn't been established. I was drinking my glass of water trying to get everything running and still reacted to the surprise as if I was asleep.
Interesting!
