DietTribe is an American documentary-reality series on Lifetime.
The series chronicles the weight loss efforts of groups of friends suffering from obesity, and debuted on January 5, 2009.
[1][2] Each 60-minute episode follows the weight-loss efforts of a group of five friends, coached by personal trainer Jessie Pavelka and psychotherapist Stacy Kaiser.
[3] In each season the group is followed for 120 days, given specific diet and exercise guidelines and regular weigh-ins to monitor their progress.