I have a genetic predisposition to be a night owl. I proved it with a DNA test, comparing my results with actual scientific research on various genetic-related conditions. Plus, my mother's side of the family always stays up super late every night.

Unfortunately, I signed up for the US military when I was 17 and they require you to get an early start every day. So I spent 20 years going to bed when I'm not tired and getting up at godawful early hours of the morning. I would basically get a lack of sleep for a few days until I was so tired, I'd pass out early and get a solid night's sleep, then start the cycle over again. My days off were the only days I got to sleep in.

Now I'm fully retired and have nothing important going on each day, so I can finally let my body adjust to its preferred sleep schedule. I'm wide awake until 2-4 AM (sometimes later), then I sleep until 10 AM to 1 PM. It's so nice not having to set an alarm anymore and naturally wake each day. I've never felt so rested!