I like near-science when it confirms my prejudices.
I have never believed in the idea of new year resolutions. Always I start the year by thinking of things I would like to see happen but tend not to do anything about it until about now. This is obviously the right approach because the day to start your new life is May 18
It is just so difficult to motivate yourself at the beginning of the year when the days are short and the weather is grey and cold. It is not a time to diet because your instincts tell you that you need comfort and warmth. It is not the time for training for the same reason. So for those who did a spring marathon - I salute you. I think it is much tougher than running in autumn when you can train on warmer days, in the light.
Me I'm planning for autumn.