Taking in sugar both during and after a workout is important. However, there is the problem that "workout" leaves a lot to interpretation. Do you do 20 minutes on a stationary bike? Do you walk around for an hour from circuit machine to circuit machine, with less than 10 minutes actually spent during sets? If you answered yes, then sugar isn't what you need. You don't need anything at all, except some real exercise.

If on the other hand, your exercise is strenuous, and depletes your bloodstream's glucose, and your liver's short-term supply of glucose, then you absolutely need sugar. Otherwise, your body will efficiently convert whatever is at hand to sugar. The most "at hand" ingredient from your body's point of view, is your lean muscle mass. You don't want to lose that. However if you have these kind of exercise sessions, then you already know this, so keep on doing what you're doing.