It seems to be a little disgusting when you are detoxing or cleansing. Your body shows some signs that you have built up toxins. These toxins can affect your whole body fitness and health. There are times that you feel sluggish and feel the stressful. Your body may experience continuous aching, diarrhea, constipation, and feeling of clumsiness. Rapid weight gain and the incapacity to lose the excess weight can also be signs of having toxins in the body.