It's the biggest season ever! The Biggest Loser: Couples begins with 11 couples who begin the show with a combined weight of more than 3.5 tons. Season seven also marks several firsts, with the series' oldest players yet (63-year-old grandparents), youngest male contestant (18), heaviest female contestant (379 lbs.) and heaviest contestant ever in the history of the show (454 lbs.). Teams of two - including mother/daughter, father/son, sisters, best friends, grandparents, cousins, an engaged couple and former models - will all come together hoping to transform their bodies, their health, and ultimately, their lives.