Kind of a classic stress response. I'm like this if I know I need to get up early.

Or I'll just get up, wide awake, at 0430h. My body is like I know we're nervous about having to be somewhere early so I spent all our energy getting us up and super alert really early with loads of nervous energy to help us process lots of thoughts!!! (meanwhile I'll feel like a boiled mushroom for the actual appointment in 3 hours)