Big Fat Liar

S1 E5: Five weeks into the program, several of the clients have yet to make any real dents in their weight-loss goals. To get to the bottom of this trend, Jackie assesses the intensity of everyone at basic training and drops by their houses the next day to follow-up. Later in the week, the clients get to practice mixed martial arts with acclaimed instructor Eddie Millis. Jackie discovers how several members of the group are cheating after bringing a lie detector to group therapy.