Hand Wash:- The most important advantage of hand washing is that you prevent yourself from getting infected by a number of dangerous ailments. People who are careless about washing their hands are at a higher risk of catching a cold or flu. Not washing hands has also the ability to cause gastrointestinal illnesses and also diarrhea which can spread to the whole family. It has also been seen that improper or not washing hands can cause pneumonia. As not washing hands can affect the health of your entire family.