Marathon Part 1 | The Biggest Loser | S8 E12

In the first leg of The Biggest Loser marathon, our contestants are joined by family, friends, and contestants past and present! For even more life-changing moments from The Biggest Loser past and present, subscribe to the official YouTube channel:    / nbcbiggestloser   For show updates and more: Follow us on Facebook:   / biggestloser   Follow us on Twitter:   / biggestloser   Follow us on Instagram:   / biggestloser   Watch full episodes: usa.app.link/WatchTheBiggestLoser