It's important to plan your workouts around activities that you enjoy, and also to vary the exercise mode as far as possible. If you dislike running, choose activities that you like better. The more enthusiastic you are about an activity, the more likely you are to work hard and keep it up. In fact, frequently changing the mode of cardio may produce better results than simply increasing the duration of time you spend doing it. This version is the first release on CNET Download.com.