There isn't a Biggest Loser Challenge currently running. There's an sub-forum called Chicks Up For A Challenge, there's always something going on there!
There's a new one starting this month on 4/22 called "Spring into Summer." Make sure you sign up over on the Biggest Loser thread and add your starting weight. Good luck!
Posts by members, moderators and admins are not considered medical advice and no guarantee is made against accuracy.