Why? Because the party season is ahead and you have to have your treats. We all know that now is not the time of year to put yourself on a Spartan eating plan.
When you seriously deprive your body of what it needs, it goes into survival mode and uses up less energy, and as soon as you start eating again, it stocks up fat ready for more deprivation. This is what's known as the yo-yo effect! If you only eat soup and yoghurt for a fortnight, you can imagine the shock your body will get when you start gorging yourself with turkey, chocolate, Christmas pudding and mince pies, and you'll only end up putting on more weight after all that starvation.
How? No food groups are cut out: you can eat everything but in reasonable quantities, with limited fat and sugar. This lowers your daily calorie intake to around 1,200 - 1,300 calories, which is 600 less than the average requirements for women. This diet results in gradual weight loss and doesn't leave you hungry, shattered or grumpy.