Mark Cornelison

THE BIGGEST LOSERS13, E3

Week 3

This week kicks off with a Chinese buffet temptation that will give the winner complete control of how contestants will be matched up for a face-off challenge in the gym -- and also give them a two-pound advantage to use or give away. Later, trainers Bob Harper and Dolvett Quince coach the contestants through a wild water-transfer challenge that will reward the winning team with the most coveted prize of all -- video chats home. And one player makes a shocking decision that stuns everyone before another contestant is sent packing following the weigh-in. Alison Sweeney hosts the series.
THE BIGGEST LOSERS13, E7

Week 7

Host Alison Sweeney surprises the contestants with the news that one player from each team will be going home with their trainer - and that player's weight will be the only one that counts at this week's weigh-in. It's also Valentine's Day at the Biggest Loser ranch, and that means letters from loved ones go to the team who digs their way under an obstacle course of logs first with a 200 lb. dummy along for the ride, representing the contestant who has gone home. The red and black teams do their best to burn calories while their trainers are away, and one contestant gets help from "Biggest Loser" nutritionist Rachel Beller in preparing a special meal for their loved one. Then the trainers and the two players they went home with return for a tense weigh-in before another contestant is sent home. Trainers Bob Harper and Dolvett Quince also star.
THE BIGGEST LOSERS13, E8

Week 8

This week, the contestants are faced with a temptation involving their favorite foods, with the winner gaining game-changing power to arrange the two teams however they like - and remain anonymous. After an unpopular decision is made to switch up the teams, tensions rise and suspicion grows about the real identity of the temptation winner. Then the red and black teams race against time and each other to assemble a giant puzzle on top of eight-foot tall blocks, with the winning team getting a very special prize. Later, after a drama-fueled weigh-in and elimination, another contestant is sent home. Alison Sweeney hosts the series, and trainers Bob Harper and Dolvett Quince also star.
THE BIGGEST LOSERS13, E6

Week 6

In this season of "no excuses," this week's challenge addresses the excuse "I can't lose weight on my own." Trainers Bob Harper and Dolvett Quince are suspended over water in a wild dunk tank-like challenge in which the red and black teams have to use their strength to keep a weight from landing their trainer in the pool. The losing team has to do without their trainer all week until the last chance workout. Once the losing team is determined, one contestant admirably steps up to lead their group while their trainer is away, with none of them aware that he is secretly watching how they do in his absence. Later, a very heated elimination sends another player home after a tense weigh-in to see how both teams did this week.
THE BIGGEST LOSERS13, E4

Week 4

The stakes are high this week as the red and black teams compete in a fierce battering ram challenge that will give one team exclusive rights to the gym, while the losing team has to find other creative ways to burn calories. Both trainers - Bob Harper and Dolvett Quince - struggle with certain contestants who they feel aren't giving it their all, making it tougher for both teams to get the weigh-in win each one wants. Alison Sweeney hosts the series.
THE BIGGEST LOSERS13, E12

Week 12

The eight remaining contestants head to the tropical paradise of Hawaii for an action-packed week that will address the excuse "I can’t lose weight on vacation." After being warmly welcomed to Oahu with a luau, the players compete in a trivia challenge that awards the winner a cash prize which can be spent on a menu of items. Next it’s off to the breathtaking Kualoa Ranch where "Jurassic Park" was filmed and there the contestants race through a challenge involving tikis and leis for the coveted prize of immunity. Later, a young woman who epitomizes "no excuses" - real-life "Soul Surfer" Bethany Hamilton - teaches the contestants and trainers how to surf. Then at Pearl Harbor, with the USS Missouri in the background, the contestants weigh in to reveal whether they were able to lose weight on vacation before another player is sent home. Alison Sweeney hosts the series and trainers Bob Harper and Dolvett Quince also star.

Mark Cornelison

Guest Appearances