Fasting detoxifies your body. Processed foods contain a lot of additives which become toxins in the body. Some of them cause the production of advanced glycation end products (AGEs). Most of the toxins are stored in fats which are burnt during prolonged fasting. This results in the release of toxins. When you do not eat or drink during the day, your body starts eating into fat reserves to create energy. This helps in burning away harmful toxins present in fat deposits. The liver, kidneys and other organs of the body get involved in this detoxification.

With this new-found popularity, the number and type of cleanse diets has soared, from food-based "liver detoxes" to liquid-only fasts for several weeks and everything in between. While the extreme cleanses often get a bad rap—Beyonce confessed that drinking the maple syrup-lemon-cayenne pepper concoction made her "cranky"—many women swear by cleanse diets to lose weight, increase energy, and even help clear up acne.
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