I drink about 3 mugs of tea and at least 1 can of coke a day (sometimes up to 3-4). I barely do any exercise and spend a lot of time in my tiny dorm room making music on my PC (it's a 19'' screen and I sit real close to it).
When I don't have lectures I usually sleep in until about 2pm. I also don't have a regular eating pattern and usually only manage 1 meal a day. I also havn't touched a vegetable in about a month and a half. Also I smoke about 3 joints most nights. I used to go to meditation but stopped about a month ago as my workload got heavier.

I know that these all probably contribute to the problem, but i've been doing all these things everyday for the past year and it's only just started up in the last fortnight. I can usually kick myself out of a bad sleep regime but this time it feels like I just don't get tired until the sun comes up.

And it's now 5:00am. I feel like I could scale a building