I'm not sure if there's a direct correlation with age or not, but I noticed that when I hit my 30s, I started getting tired around 3pm. It's like clockwork. 3pm

I'm not sure if there's a direct correlation with age or not, but I noticed that when I hit my 30s, I started getting tired around 3pm. It's like clockwork. 3pm rolls around and my eyelids start feeling heavy. I don't usually take a nap however, but the few times I did, admittedly, I felt reinvigorated. But before my 30s and this odd 3pm sleep clock, taking a nap didn't reinvigorate me at all. Instead, I would wake up even more tired than before. Go figure.