It's because your bed was having a rave party and they were playing the most epic of EDM sets. You were invited, but you didn't RSVP.
Or maybe it's because you were chosen as a human guinea pig for our new sleep-disrupting technology. You're a brave pioneer, don't worry!
Or perhaps, just perhaps, it's because you finally learned how to cook ramen noodles in your sleep. It's a skill, we swear.