My brain is hard-wired to wake me up around 4:30. It kinda drives me bananas. I've never been one to sleep in (for me, "sleeping in" is perhaps sleeping in until about 8:00 -- although that's not happened since the 90s), have always been an earlybird, but still, it kinda bugs me -- I could be up really late, and my brain'll still have me up around 4:30. The ole' circadian rhythms are locked in with that. I've long since made use of that tendency by making that early morning time my prime writing time, so I've been productive in that time. I've always been like that, even as a kid -- I'd sneak downstairs and read or watch whatever was on television that early. One show I remembered was a trippy one called "Dr. Snuggles..."
I could never understand why this show was only on in the very early morning hours. My kid logic was confounded -- it was a cartoon, kids liked cartoons, it should be on during normal cartoon times. But it was only on in the early morning hours, so I'd usually watch it, while the rest of the house slept, while the whole neighborhood slept. I haven't thought about that in over 20 years, but I still remembered that theme song for it, and the style of animation.