This is my fitness downfall. I have a cyclical problem that involves immense pain and fatigue (i have a uterus that hates me) and each time I get into working out, the organ renders me temporarily useless. Getting back into a work out regime after its over seems impossible (though I keep trying) This has happened about once ot twice per year for as long as I can remember (starting to work out and then failing due to the thing)
Maybe make a poll?