Well if you ask me the whole December/January transition is ridiculous. Being a glutton one minute and then abstaining the next seems like a sure fire recipe for a bipolar episode. Surely we would all be much better off changing our habits in a less drastic fashion? Perhaps we could start a detox in February... or March... maybe July?
Granted, January is a pretty gloomy month (I was shocked to see a blue sky today, having forgotten what one looked like), but why is that particular day more depressing than any other? Well, of course, it's not. Blue Monday was actually invented by a psychologist to help promote some travel company.