Missed Gym? It'll Cost You.

With the start of a new year, many people resolve to shed their holiday paunch by hitting the gym more frequently. It's easy to stay motivated for a few weeks, but then other things seem to take precedence -- late nights at work, happy hour or the couch. So, what if it cost you $5 every time you missed the gym? Do you think you'd be more likely to go? [ABSTRACT FROM AUTHOR]