Also, if you want to exercise consistently, I think it is SO IMPORTANT to have a goal to work towards. Some people are motivated simply by their love of exercise, but for many of us, that is not enough. I've been surprised at how my view of running has changed. I don't think of it as just "going for a run." I think of it as getting one step closer to my goal. If you think of yourself as an athlete in training, I believe you are more likely to stick to your goals and stay motivated.