It's not just for the middle aged woman, for most people 80% of your results with weight loss will come from your diet. Workouts will just help you to create more tone and definition, and of course the benefit of maintaining muscle mass and strong bones is really important for the middle aged woman.

I hope you get to find a workout that you enjoy and know it is possible to get a really good workout from home. Maybe check out Caroline Girvan on Youtube, her sessions are awesome and seriously intense.