spin classes are SO tough! i mean it may look easy just sitting there on a bike as your legs go around and around. but my cousin volunteers at a gym and has asked me go once. and that was the only time i went. the next day my but my whole legs killlled. needless to say, i did get a good workout thought. haha.

augh cardio is tough, but i think you are all right, its the best way to go. back to the gym for me.