What it entails: A 7-day meal plan mostly consisting of herbal tea, smoothies, soups, simple salads and coconut water. You are not allowed dairy, grains with gluten, meat, shellfish, anything processed (including soy), fatty nuts, nightshade vegetables such as potatoes, peppers or eggplant; condiments, sugar, alcohol, caffeine or soda. In addition, Paltrow recommends drinking half a cup of caster oil or using an herbal laxative for you know... the problem that will inevitably develop with this detox. Who does it: GOOP-master Gwyneth Paltrow Advantages: Unlike many detox diets, you do actually get to eat food. "Elements of it may be healthy," says Hendel. "There’s nothing wrong with a blueberry almond smoothie for breakfast or a carrot and ginger salad as long as you have protein on top of it. I also like including more herbal tea in your diet instead of soda." Disadvantages: It cuts out major food groups and is dangerously low in calories. Also, Paltrow even points out you'll probably get constipated from lack of food. "It doesn’t energize you; you can get headaches and it puts you in a low metabolic state," says Hendel, "You’re challenging your organs to function without the kind of nutrients they need to function optimally." The expert's opinion:"This diet is very low in thenumber of fruit and vegetable servings you should have in a day. It seems extremely low in protein sources. It has low levels of grain or carbohydrate sources," says Hendel. "Most nutritionists are not big on the whole coconut water thing either."