The 'real loser' contestants were subjected to extreme conditions in constricted amount of time, without a proper easing back into sustainable conditions (eg work out 8-9 hours per day, restricted to extreme calorie deficient diets) - a recipe for disaster as it resulted in metabolic damage (look that up) from which it is VERY difficult to recover without ballooning back to to your pre-start overly-heavy state. That program is no model for success - it is a model for ruin, and the trainers knew it, the contestants were desperate and clueless, and now they pay a price where their bodies are struggling to get out of starvation mode (where a mere few grams of increased nutrients result in weight gain), yet they are regaining everything they lost; 24hr workouts won't fix that either.