The sixteen contestants for season 8 are introduced. The theme for the season is having a second chance, which brings with it a lot of baggage for most, if not all, contestants. The second chance applies to the show with one contestant, back from a previous season, and has been allowed to continue with his weight loss journey. Before the contestants even have a chance to do a workout, weigh-in or meet the trainers, they are subjected to their first challenge, a 1-mile race, the winner to have immunity from elimination. As with previous seasons, all the contestants will be paired up, the winner of the race also having the choice of his/her partner. The race proves to be too much for two of the contestants. At the first official weigh-in, there are five people over 400 pounds apiece - the largest number ever for the show, and the heaviest single person ever on the show. At their first workout, the contestants learn that both Bob and Jillian will be jointly training them all. Each ...