Let's face it, most of us live pretty busy lives and the amount of time spent exercising does eat up what little free time a lot of us have. I don't like to waste my free time any more than anyone else, so if I am going to use it up on an activity, then I feel the rewards of the activity should outweigh the cost. One of the activities that I add to my workout routines is a cardio program. I do not enjoy cardio at all, but I understand that it is important. So if I am going to invest my time ...