Why 3AM? I was surprised how many people were asking this exact same question. There are lots of fun explanations, with the most common being that 3AM is the most active time for ghosts. This seemed a fairly logical explanation, but I dug a bit deeper just in case.
Depression was a suggestion, but I don’t think I have that.
“Circadian Rhythms” seemed like a legit answer once I learned they aren’t dependent on what time you go to sleep. It also seemed to coincide with the most interesting bit of info I found…
According to some historians, sleeping through the night is a relatively recent practice in human history. Before the invention of the light bulb, people generally went to bed much earlier, and slept through the night in two four-hour chunks, with a short period (1–2 hours) of wakefulness in the middle of the night. It’s called Segmented Sleep.
So, waking up in the middle of the night might be part of our DNA. Most likely though, I just have a high sensitivity to ghosts. Mmm, I suddenly have a craving for Ecto Cooler.