Never did manage it without a decent break since i we're a lad, but one decent explosion is fine for me and I expect the ladies too;)..
However there is a lot of tiredness around at this time of year its called SAD, Seasonal Affective Disorder, caused by the lack of sunlight and the dark days it does have an effect on a lot of people.
Its very problematic up in places like Finland and Norway very long dark nights and very short days leads to a lot of cases of depression:(..