A new set of hopefuls are introduced for the first time.
The players compete on a assault course, challenging them to break through excuses that are getting in their way.
The contestants have to deal with two challenges, including one that tests their nutrition knowledge.
Contestants are put through a lottery to see who will be going home. Two eliminated contestants compete to stay in the competition for another week.
The challenge winners are given the chance to sideline a member of the opposing team.
The contestants have to face temptation as they take part in a challenge featuring stadium food favorites.
The contestants must hold a weighed pulley to stop their trainers falling into the pool.
Three team MVPs battle it out and one team's willpower is also tested in Las Vegas.
Super Bowl champions Michael Irvin, Donald Driver and Willie McGinest help the contestants during a football challenge.
Chef Rocco DiSpirito has to judge which team has managed to create the healthiest and tastiest dish.
The contestants have to try and lose 50 pounds collectively so that nobody has to go home. They also have to take part in a sand-pile challenge.
Alison surprises the contestants with the news that they’ll be competing as singles, rather than in teams this week.
The remaining six contestants make their way to the island of Kauai where they do everything that they can to avoid falling below this week’s red line. They begin their trip at the scenic Waimea Canyon State Park before the trainers put them through an intense workout at Polihale beach. They then have to get into kayaks and paddle out in the ocean to retrieve a bag of puzzle pieces.