"DietTribe" is Lifetime's new reality series that follows the emotional journey of five friends as they attempt to go from "fat" to "fit." These women have made a commitment to lose their unwanted pounds together. With the help of professional fitness trainer Jessie Pavelka and psychotherapist Stacy Kaiser (of "Celebrity Fit Club" fame), each woman will change her eating and exercise habits over the course of three months and confront the issues that caused her to gain weight initially.