The challenge begins, and everyone immediately gangs up on the Red Team. Sami asks what's up with that, and Q is also curious about what the hell is going on. Sarah tells us in plain terms that this is all about Q's lack of effort. Justin rambles on about going to war with your heavyweights. Sarah joyfully takes out the Red Team, and Larialmy is clearly upset. Q notes that all the family, family, family talk is bullcrap. Next, everyone targets the Brown Team. They get several weights on the Pink scale before they're eliminated. The Gray and Yellow Teams work together to eliminate Pink, and then battle each other for the prize. The Gray Team saved all their big weights, which turned out to be a pretty good strategy. Moses and Kaylee have only five pound weights, and are scurrying to try to pile them up fast. In the end, the Yellow Team wins and are characteristically annoying about it, even while Rulon professes his guilt. They all put in their hands and do a cheer of, "Family!" which I guess is this season's "Pride on three!" Lord help us.

The Knowns, meanwhile, meet up with Bob and Jillian in the gym. Jillian says that they have the tools and knowledge to lose a collective 49 pounds and win immunity for all. And then it's totally the last chance workout! Bob puts his people through medicine ball hell. Jillian tells us that the goal for today is to keep the contestants focused and centered. They're smart and know how to do this, she says, and they'll be okay. She's totally not even motivated to give them beatings. I think it's right that this is her last season. Arthur then gets 10 minutes on the Stairmaster, which is a challenge. But he triumphs and feels great. Jen is then forced to carry Jillian across the gym, which is a very odd visual. Jillian gets a little fire in her and yells at Jen, though I'm not sure why. Sometimes screaming at someone else is its own motivation and reward.

And then we are treated to 40 minutes of weigh-in. Just when you thought this show couldn't feel longer! The Knowns are up first, seeing if they can reach their 49 pound goal. Irene steps onto the scale, and because she gained 6 pounds last time, they're using her weight from the week before that. So the weight gain is not a particular advantage. Irene goes from 224 to 216, for a loss of 8 pounds. I love how she's just quietly kicking ass. I also suspect that of all the Biggest Loser contestants, Irene would be the best one to hang out with. She's just so chill! The Green Team is next. Jen goes from 236 to 232 for a loss of 4 pounds, while Jay goes from 341 to 331 for a loss of 10. Jen's a little disappointed in her own number, but proud of her dad. The Knowns have lost 22 pounds so far.