10 Best and Worst Winter Diets


4. Calorie restriction

This is another extreme version of a good diet. Some people drop their calories below 1,000 daily. Of course, they lose weight at first, but then the weight loss stops because their body has adapted and their metabolism has dropped. Never drop your calories below 1,200 daily, more for men. Vary the amount of calories you eat from day to day to keep your metabolism up.