EXTREME WEIGHT LOSS
Chris takes twins David, 470 pounds, & Rebecca, 398 pounds, on his toughest milestone challenge to a rigorous "Kokoro" training camp designed to forge mental toughness and modeled on Navy SEAL Hell Week. But when the twins' old habits begin to reemerge, Chris becomes concerned they may not be able to meet their weight loss goals.
Tuesday, May 28, 8:00 p.m., ET