I'm the same way. Back when I used to have summer breaks (highschool / college if I didn't have a part-time gig) my days would start 2 hours later every day. So

I'm the same way. Back when I used to have summer breaks (highschool / college if I didn't have a part-time gig) my days would start 2 hours later every day. So I'd wake up at 8, then 10, then 12... until I was fully nocturnal. But then 4-5 days later I was back to waking up in the morning.