Actually, two days of dieting followed by one off-day, followed by two days of dieting, and so on--and the dieting is of the generally discredited low-carbohydrate, high-protein variety. It is widely recognized that the most effective and healthiest weight-loss diets include high complex-carbohydrates (and are low fat), but internist Glenn Cooper and nutritionist/exercise-physiologist Tessa Cooper think they have a better idea in returning to the low-carbohydrate, high-protein model. ""The Two-Day Diet Is Designed to Exploit the Positive Aspects of LCHP Diets Without Subjecting the Dieter to Medical Risk, Inconvenience, or Great Expense""--and tree, this is not as extreme as the high-protein diets of the past. The off-day, the Coopers feel, provides a better-balanced intake, and additionally gives the dieter incentive to adhere to the regimen. Along with explaining their program, the authors include motivational assistance (""When you're at your weakest, the Two-Day Diet is strongest. It's like a friend giving you support and encouragement""), menus, recipes (both fairly routine), some exercise pointers, and suggestions for maintenance. A routine, perhaps anachronistic, addition to the legions of diet guides.