TV 'The Biggest Loser' Returns With New Twists: Here's What to Expect in Season 17 By Raphael Chestang 3:54 PM PST, January 4, 2016 This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page. 17:56'The Biggest Loser' Premieres Tonight: What to Watch For02:17Dick Wolf on ‘SVU’s Benson & Stabler Relationship and 30 Years o…02:10‘Britney vs. Spears’: Biggest Revelations From the Netflix Doc01:05Watch the Trailer for the Lindy Chamberlain Docuseries ‘Trial in…00:35'Darcey & Stacey' Returning for Season 3: Watch the First Look!07:42'The Baby-Sitters Club' Season 2: Cast Reacts to Biggest Spoiler…01:552021 BET Hip Hop Awards: Biggest Moments of the Night! (Exclusiv…01:23’Queens’: What to Know About the New NBC Music Drama03:04New Kids on the Block’s Mixtape Tour: What to Expect (Exclusive)10:10'Smallville' Turns 20! Cast Reunites and Reflects on the Series'…04:12'Big Brother': Watch Derek F. Apologize to Tiffany and Ask Azah …02:38Watch the ‘90 Day: The Single Life’ Season 2 Explosive Trailer02:34‘The Voice’: Watch Ariana Grande Drop the Mic on Blake Shelton02:18Watch Chris Martin Dedicate 'My Universe' to Dakota Johnson03:43Ariana Grande Does Celine Dion Impression on 'The Voice'01:56‘Squid Game’: What to Know About Netflix’s No. 1 Show01:24‘Space Titans’: Watch an Exclusive Preview of the Discovery Plus…02:39Watch Britney Spears Dance to Her 2003 Track ‘Brave New Girl’04:48Bob Newhart Celebrates 62 Years in Show Business (Exclusive) The Biggest Loser returns to NBC on Monday with a new house, new gym, new host and a tantalizing new twist! New host Bob Harper will continue to motivate contestants as they try to lose weight, but this time they're doing it in the face of real-life hurdles. WATCH: Trainer Bob Harper Replaces Alison Sweeney as Host of 'Biggest Loser'The show's 17th season carries the theme of "temptation," and incorporates non-food indulgences such as shopping and using electronic devices. This season's brave souls include The Voice's Erin Willet, who teams up with Survivor winner Richard Hatch. In case you're wondering, Hatch still has a penchant for going au naturel."I'm not ashamed," Hatch told ET. "It's my body. So what?"WATCH: Former Contestant Slams The Biggest Loser, Others Stand By ShowThe contestants aren't the only ones jumping through hoops this season. Harper's new gig presented its own set of challenges."The long hours that a host has ... I mean, my first day of shooting my call time was 6 p.m. and I wrapped at 5 a.m.," Harper told ET. "Are you kidding me? I got to get to bed!" The Biggest Loser airs Monday at 9 p.m.ET/PT on NBC.Former 'Biggest Loser' Contestant Claims Show Uses Fake Scale This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page.