Did you know that on average, the human body has about 2 square meters (21.5 square feet) of skin? And in addition to that, we produce about 1 pint of sweat every day [source: Nemours]. It may sound like a lot to maintain, but good personal hygiene habits can help keep you healthy. Hand washing, for example, is the best way to avoid getting sick. Washing your face can help reduce your risk of bacterial infections such as trachoma, an eye infection. Good hygiene is good for more than just washing away bacteria and other potentially dangerous things -- it also helps us smell fresh and feel confident. How? Let's look at five easy ways.