awareness and reflection.
You do not have to take that literally to find meaning in it. Even from a practical point of view, waking up at this hour can be a chance to notice what your mind is carrying.
Instead of panicking, you can gently ask:
What emotion am I avoiding?
What problem needs my attention?
What do I need to let go of?
What is my body asking for: rest, calm, routine, or support?
The Traditional Body Clock Idea
Some traditional systems, including Traditional Chinese Medicine, connect different hours