I came through January with 350 commuting miles notched - this amounted to every day when i was at my 'home' office and could possibly commute by bike - I intend to follow the same approach for February and onwards, I've followed this since mid summer last year so am now well in the groove. The way I now look at it is biking to work is now my default position...this takes out the daily need to review weather etc. and makes for an easier commit, rather than every morning deciding whether you fancy it or not.