The navel is the trace of the umbilical cord that connects the fetus to the mother, and as part of the human embryonic organs, the navel is more closely connected to the abdominal cavity than the skin elsewhere in the abdomen. Therefore, if you don't wash it properly, it will irritate the internal organs in the abdominal cavity (mainly the small intestine) and cause discomfort in the digestive system, which is also known as tummy ache. Therefore, it is not impossible to wash the mud in the navel, but it should be kept clean. However, the method of washing the navel is more delicate, not like rubbing the bath and digging the nose as hard, but should use a cotton swab, such as a softer thing dipped in the bath, "point to point" of the cleaning. Or the best way is to gently scrub with a loofah, so that the accumulated stains run out of their own good behavior. After cleaning, be sure to blot with a cotton swab or paper towel. Secondly, it is necessary to apply some necessary moisturizer to keep the skin lubricated. [Many people like to use their fingernails to dig out the dirt in the belly button, but this is not scientific. If you're not careful, you may get pus in your navel and cause an infection

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