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Trainers Anna Kournikova and Dolvett Quince join Bob and new contestants for the Battle of the Ages!
Celebrate Thanksgiving with the Where Are They Now? Special, featuring favorite past contestants like Olivia, Hannah, Jesse, Ali, O'Neal and many more!
The contestants play a game of trivia with questions based on childhood obesity studies.
Season 11 winner Olivia Ward and chef Devin Alexander host a cooking challenge with an awesome prize!
It's NFL Week, with Clay Matthews, Tony Gonzalez, Drew Brees, Eric Dickerson, Shawne Merriman and Tim Tebow!
Fan faves Hannah Curlee, Adam Hurtado and Marci Crozier check in, and the teams battle the elements to win letters from home.
One lucky player goes home with their trainer and immunity - and the responsibility of losing enough weight to keep their team safe.
A high-stakes calorie challenge realigns the teams and causes a whole lot of drama on the ranch.
Apolo Ohno guest stars as the game flips to singles and the contestants compete in a pentathlon for immunity!
After a holiday temptation challenge, the trainers prepare a healthy Thanksgiving feast!
Special guest Nastia Liukin, a five-time Olympic medalist and four-time World Champion gymnast, meets up with the players for a pop challenge that tests their stamina as they compete in five different exercises.
The final four contestants leave the ranch and transition back to life at home, showing off their new slimmer selves to family and friends and facing the temptations and challenges of everyday life.
The contestants face challenges in the form of overcoming Valentine's Day treats and reunions with their family members.
Former boxer Laila Ali puts the contestants through a fun and challenging workout.
The competition moves to singles, so contestants will compete on their own without partners or teammates from this point forward.
One player wins the power to pair off the others, leading to the most explosive weigh-in all season.
The contestants face their first temptation in the form of cupcakes, one of which represents a potentially huge prize for the winner that could grow more valuable each week.
The trainers make a surprise visit to the homes of three contestants.
Another contestant is sent home.
It's the ultimate test of teamwork and timing as both teams race to win the challenge and a prize that will give them a valuable advantage at weigh-in.
The Biggest Loser contestants are whisked away on military trucks to Camp Pendleton, where they will live and train like Marines for the week.
This year's group of contestants, including 15 adults and 3 children, begin their quest to lose weight.
The contestants endure tempting donuts, limited time in gym, topped by a visit from Dr. H.
The two teams of contestants are all tied up this week - literally - in a rope challenge in which teamwork will determine which group of players will get to use the gym this week, and which team will have to be creative and find other places at the ranch.
It's makeover week with celebrity stylists Jeannie Mae and Ken Paves - and the Final Four are announced!
The contestants travel to Hawaii to face a new set of challenges.
Video chats from home, a tempting Chinese food buffet, face-offs in the gym, and a shocking decision - and it's only Week 3!
The Biggest Loser catches up with former contestants and ban them together to participate in a triathlon!
It's the highly anticipated makeover episode with Tim Gunn, and the players prepare to give a speech to influence others.
The final four players tackle the struggles of being at home and away from their trainers, but things get tougher when the players also realize they are training for their first marathon.
The "Unknown Trainers" are revealed - and the contestants square off to win a big advantage at this week's weigh-in from Curtis Stone.
The competition heats up with a challenge offering one group of contestants the chance for immunity.
It's the Makeover Episode with Tim Gunn - and a private concert by OneRepublic!
It is Finals week on The Biggest Loser. The players reveal how much they have learned. Also revealed on this episode...the final four contestants!
It's Valentine's Day on the ranch and the contestants are ushered into a room full of chocolate candies for a holiday-themed temptation.
Halloween Week brings a crazy candy temptation, a haunted maze and a secret revealed!
Get ready for a poker-playing pop challenge and an educational trip to the grocery store!
The winner of a temptation test gets to switch up teams.
The third finalist is announced; the eliminated contestants compete for the $100,000 at-home prize; the "Biggest Loser'' is announced.
The players are in for a surprise when financial advisor Suze Orman stops by the ranch to dish up some advice.
Find out which two players make the finals!
Season 13 kicks off with 20 new contestants and a brand new twist to the game!
With the teams dissolved, the nine remaining contestants are now on their own.
The remaining contestants go home for eighteen days.
The players are in for a shock when they find out two players will be eliminated this week.
The players head to Washington DC, where they make a meal in the White House kitchen.
All of this season's contestants reunite and compete for the at-home prize; America's vote determines the third finalist; one contestant wins the grand prize.
This episode is the turning point of the game, where the contestants now compete individually. At the challenge for immunity and reward, Gary logs the most miles on his stationary bike before midnight, winning another week at the ranch, and a visit from his family. At the weigh-in Caroline announces that the participants will now be weighted based on their total percentage of body fat lost, and the two who have lost the least will be nominated for elimination. This week, it's Maurice and Andrea who are sent to the elimination room, where the other players choose to vote out Andrea.moreless
The contestants are excited to hear from host Alison Sweeney that they will all be going home for two weeks.
The Biggest Loser is chosen during the season finale.
One episode away from the finale, the remaining few are put to the test.
The final episode of the season as the contestants weigh in for one last time.
Eliminated contestants receive a second chance. Plus, NASCAR driver Carl Edwards surprises the contestants.
Previously eliminated contestants vie for a place in the finale.
Fashion expert Tim Gunn and hairstylist Ken Paves help give makeovers to the contestants.
The contestants train with Olympic athletes Apolo Ohno and Lolo Jones.