I blame winter.  I like to say that if I lived somewhere else – either somewhere warmer, or somewhere with more daylight hours, I wouldn’t suffer this temptation.  I have no way of knowing whether that’s true since I’ve only ever lived in Ohio, but I’m aware that it’s a sorry excuse.  I’m talking about the temptation to skip my workout and take an unplanned rest day.  You know that little devil on your shoulder.  The one who doesn’t show up until around 2:15 p.m. when he just pops his head in and leads with some seemingly benign comment like, “How you feeling?  Has this been a long day, or…