Husband-and-wife teams and parent-adult child teams compete in the must-see season premiere.

Chef Rocco DiSpirito teaches contestants to make healthy, tasty and affordable meals.

This week, the contestants take a road trip to one of the most beautiful places in the world - the Grand Canyon!

Family teams face their toughest challenge yet.

Surprising weigh-in forces one team to send a family member home.

Contestants face longest challenge ever - from sun up to sundown.

Contestants try unusual workouts -- and get six-week progress reports.

One contestant breaks a record at weigh-in.

A week of surprises - including the return of all the eliminated contestants - shakes things up for The Biggest Losers.

Contestants get a blast from the past 80's week.

NFL Superstars Jerry Rice and Steve Young and Celebrity Chef Rocco DiSpirito guest star in the Thanksgiving episode.

Tyra Banks and Project Runway winner Christian Siriano Guest Star -- It's one of the most eagerly-anticipated events of every Biggest Loser season - the makeover episode!

Final four contestants reflect on their amazing weight loss journeys, and America votes to choose the third finalist!

Biggest Loser revealed in Season Finale - In this must-see, exciting live finale, all of The Biggest Loser families from this season return for a special reunion and a chance to weigh in one last time - and show America how much weight they've all lost since beginning their weight-loss journeys. Written by Anonymous