Welcome. Back. Jillian. Have you missed her? Oh gosh, I have. Jillian is back this season with the show's main focus shifting to combating childhood obesity. There are three child contestants this season: Sunny (16), Noah -- aka "Bingo" (13), and Lindsay (13). The rules are different for them, as they should be. These three will spend some time on the ranch, but will stay mostly at home. The trainers will check in with them regularly and they have immunity for the entire season. While there has been some controversy with having contestants that are kids, the way they have the rules set for them makes it a brilliant example of the ongoing need to put an end to childhood obesity. The kids are called "Ambassadors for Change" on the show, and simply want to fix their respective eating habits while they're still young.