Uploaded January 2012 | Updated September 2026, 1 day ago
The Fit Challenge is back and better than ever in 2012. It's your favorite "get fit" competition, just in time for the new year, and we've cranked the intensity up a few notches. Now there's never been a better time to change your body composition. For more details, visit TNI.com/Fit.
The Fit Challenge is back and better than ever in 2012. It's your favorite "get fit" competition, just in time for the new year, and we've cranked the intensity up a few notches. Now there's never been a better time to change your body composition. For more details, visit TNI.com/Fit.










