As a NEET I've been sleeping twice in a day, I was curious about this and turns out thats how we used to sleep before the industrial revolution.
>For millennia, people lived by the sun's cycle. They would go to bed after sunset for a "first sleep," wake up around midnight for a period of quiet activity, and then sleep again for a "second sleep" until morning.
This is my exact schedule that I fall into as a NEET. Really interesting stuff.