WHAT 'S MAKING YOU FAT : A BEST LIFE SPECIAL , premiering Thursday , March 26 , at 8 PM ( ET / PT ) , counters the widespread misinformation currently confusing the public about effective fitness and weight loss . In this Discovery Studios production , Greene looks back at his career and counts down his personal Top 10 Diet and Exercise Myths--busting each one . Greene helps two people--36-year-old Jennifer and 46-year-old Kabin--in their attempts to lose weight . Jennifer is working toward shedding her image as the " heavy kid in class " to regain both her own happiness and her physical well-being . Kabin , an " emotional eater , " aims at changing his sedentary lifestyle , knowing that his current weight could lead to high blood pressure or even a stroke .