Unusual insomnia.

I am generally a bit of a night owl(as the evidence of the time I usually write these would suggest) but I wouldn't normally consider myself an insomniac. I am not sure what has kept me up tonight, though, and on a few of the more recent nights as well. I generally feel pretty calm but wonder if there's some sort of underlying anxiety or the like. Luckily my workload is relatively light over the next few days so my expectedly lethargic demeanor shouldn't be too much of a game breaker.