Why haven't I gone to bed yet? I have an appointment at 9, dammit.
There are microscopic creatures called nocturnites that live in our ear hairs. Everyone has them, in varying amounts, and the buggers are voracious breeders. Normally, the excess nocturnites are shed from our ear hairs via the younger generations wanting to go see what life is like on other bodies. However, occasionally a generation will come along that’s directionally impaired and instead of traveling out of the ear canal, they go deeper until they hit the brain. Once they hit the brain, they get start getting high on electrical signals and keep our neurons firing to live vicariously through our perceptions, which then keeps us awake longer than we’re supposed to, no matter how early we have to get up tomorrow.