For the past weeks, I've been waking up at 4 in the morning. It's like clockwork. The clock goes 4 and my eyes automatically open up. And then starts the tossing and turning. Three hours later, I've been awake-sleeping the whole time and waking up is a real struggle. The whole day I try the stay awake, consuming copious amounts of coffee. Not knowing what it is that is causing this, I went on a quest to find…