t's estimated that British women who diet spend on average 31 years trying to lose weight. What is it that feeds the female obsession regarding body image, weight and dieting? This incredible documentary follows two journalists as they go on a no-holds-barred journey into the world of extreme dieting. Both journalists, healthy size 12s with average BMIs, are aiming to drop five dress sizes in five weeks. With a 'Don't Try This at Home' warning, both Kate and Louise follow strict regimes of swimming in freezing cold water to raise the metabolism, colonic irrigation, extreme diets and extreme exercise regimes. Relationships reach breaking point, functioning in their normal daily lives becomes almost impossible and emotions run away. Ultimately for one journalist the experiment is halted, as concerns are raised by the doctor, while for the other, size 00 jeans beckon - but at what cost?