So of course me being me decides to get down on the floor and do some exercises. Of course I don't start slow and easy. I do 12 crunches and think I can do 12 more so at a 100 plus I stop. Nothing hurt. I preceded to contort my body into all kinds of muscle workouts. Cut to today...OMG! Do I work thru the pain today or can I rest for one day?

The general consensus that I have always heard (and my usual practice,) on this topic is to give your muscles a day of rest in between workouts. The reasoning is that the workout creates micro-tears in the muscle fibers that then need the time to repair themselves (that's how muscle tissue grows and strengthens, not be creating more cells or fibers.) Some who are really into it will alternate days, doing an intense upper body workout one day followed by the lower body the next day.