Speaking of: there are three fountains in the middle of a pond, and each team will be challenged to fill them with coins -- ten coins for every member of their team. And the coins are five pound weights. David hasn't been medically cleared for the challenge, so the Blue Team and Red Team will have to get forty coins in the fountain. Danni will have to get ten coins in the fountain. The challenge begins, and the contestants jump in the water. There's a fair bit of swimming involved, and Joe and Danni instantly start their competitive thing. There are some other good swimmers in the mix, and the Red Team and Danni wind up hitting the halfway point at about the same time. Alex isn't a great swimmer and so decides to take a little break, but Michael hustles her along. Gina basically admits defeat and decides to stop trying. Maybe if she'd had more fish she'd be more of a natural in the water? Danni picks up her last coin, and despite the fatigue powers through and wins the whole thing! She takes the two-pound advantage instead of the call home, obviously.
And then it's time for David to check in with Dr. "Death" Huizenga! David is still on crutches due to his knee, and Dr. H. shows him an MRI which shows a) a fatty knee; b) cracks in his spongy bone. I don't exactly know what that means, but any time you mention spongy bone it can't be good. David finally drops the info that, a few years ago, he had an injury to the meniscus of that same leg, which also happened on a treadmill. Bob wishes he'd have known about the previous injury, since it put the team at a huge disadvantage. He notes that David has a hard time asking for help, or even what he needs, and needs to get to the point where he recognizes his feelings as valid. So, he's another one to put on the therapy bus.
Bob pushes a little, and we learn that David has a wife and seven children. His oldest daughter Tiffany has Rett syndrome, which means that she has difficulty walking, and is mentally between a year and eighteen months old (though in physical age appears to be in her 20s). It's difficult to help her get around, and David worries that if he doesn't take care of himself, he won't be able to take care of her as well. And that possibility makes him feel like a failure. Bottling up his emotions has contributed to David's problems with weight, as well as problems with... general things. Bob and Dr. H. encourage David to face his emotions and ask for help when he needs it, but he says it's probably going to be a long road. Maybe things would improve if he had access to more fish?