That depends on the kind of workout that you're gonna be doing. There are many types of exercises when it comes to workouts, and there are impact oriented exercises and non impact oriented ones. Any exercise, when done regularly everyday without fail will have its effects, so all you need to do is come up with a good regimen or routine that can help you lose weight over a period of time. You can try aerobics and other intense exercises, because the more intense the workout is, the more easily you can lose weight. You can also do some cardio workouts and try your hand with weights.