Why Do The Creativity Juices Flow In The Wee Hours Of The Night?

It is 11:48, p.m. Might I state, or should it just be left unstated and known, hmmm. Well it is stated anyway. Once again I am in my office and things are starting to swing into tempo, the harmonic functions of my brain are starting to inline and Coagulate into productive functions. I left the main part of the house at 9:45, again p.m., for the office-garage to do some online work, but the mind never really seems to get to hopping till about that midnight hour, then once it gets to going it is off, and the next time I check the time it is ugly about 4am...