The answer is simple – are you happy with your exercise routine. Does your treadmill turn you on? Now I will not talk bad about the treadmill. It serves a purpose and is extremely useful to those who are unable to go to an establishment and take classes. But ladies lets face it, you get on a treadmill and you walk. Then you walk some more. You imagine yourself in some exotic location, but the moment you open your eyes where are you. You are back home and still in the same spot.