My rule is this: if I'm not out of breath at all, if I'm not moving a lot, and if I'm not sore the next day, than it wasn't really exercise.  Sure these are sports, but that doesn't mean you are actually getting exercise.  If you want exercise, you need to get both aerobic and muscle workouts.  This means that you have to be constantly moving for at least 20 min (for the aerobic) and to really work specific body parts until it hurts (for the muscle work out).