If you are feeling worn out, it indicates that toxins are building up in your body and digestion is not proper. Your body has the potential to generate all the energy you want. Your circulation goes beyond veins and arteries to minute channels that supply nutrients and energy for all the billions of cells in your body. When the channels are clogged with digestive impurities, fatigue sets in. Smartlean is a herbal masterpiece of 16 ingredients which helps to increase metabolism rate of human body, thus resulting in integration of body functions, better digestive capacity and removal of toxins from your body.