Fit exercise into your busy schedule? That's as absurd as saying that there are eight days in a week. First, you've never exercised before or regularly played a sport. Second, you've never been into the fitness crowd and third, you're far too busy to even think about exercise. In other words, You're just not into it.
Of course your friends talk about it and rave about the latest fitness craze, but you've seen it too often, some of them are on the "on-again-off-again" treadmill / stair master mania, and you wonder why they haven't shed the fat that they're desperately still trying to hide. Seeing what your friends go through and not seeing any results, you cling to the notion that your total lack of interest is justified.
You're not the least bit inclined to engage in these circus-like contortions or do those mindless freestyle strokes in the water. That would only encroach into your already busy schedule of juggling family, home and career. These three combined husband/children/work are your exercise.
Before tackling the idea of fitting exercise into your busy schedule, it might be better if we start with the concept of self-assessment and then familiarize ourselves with the disease-prevention aspect of exercise.
Once you've accepted the fact that exercise is good for your health, then you can consider some of the ways you can include it into your life.