What sort of job do you do? I've managed to exercise at least once a week since the beginning of January, but I also think that a large part of my generally being fitter is that I walk around a lot more at work. Luckily the nature of my job is such that walking round almost makes me better at it! (Although my year 11 class said I made them dizzy one day...)
This morning I was demonstrating zombie walks (including sound effects) to a class.