3.30 am? No one should see a clock at that hour

So, after a long period of being completely incapable of falling asleep until 3 am or so - and then getting a few hours sleep - my body has decided that it will happily fall asleep at 12 or so and THEN WAKE ME UP AT 3.30 AM. Or sometimes 4 or so. I am not a naturally early riser. In fact, I would go so far as to say that I and the morning have an adversarial relationship going back to my teen years. SO WHAT IS THIS MADNESS?

I bet Pliny the Elder has a cure for insomnia. But it probably involves tortoises in your armpits or carrying a pig on your head.