Privacy Policy Terms of Service © 2018, The Berenstain Bears  |  | Most of the dust in your home is actually dead skin!  YUCK! Sneezes regularly exceed 100 mph. There's a good reason why you can't keep your eyes open when you sneeze- that sneeze is speeding out of your body at close to 100 mph. This is, of course, a good reason to cover your mouth when you sneeze. Coughs travel at about 60 mph. Traveling that fast, it's no wonder coughs spray germs far and wide. So covering your mouth and nose with a tissue OR if you don't have a tissue, coughing or sneezing into your upper sleeve or elbow, not your hands, is very important.  And be sure to put your used tissue in the waste basket. About 32 million bacteria call every inch of your skin home. But don't worry because a majority of these are really harmless and some are even helpful in keeping your body healthy. Tears and mucus contain an enzyme called lysozyme that breaks down the cell walls of many bacteria. This is a good thing!  The mucus that lines your nose and throat and the tears that wet your eyes are helping to prevent bacteria from infecting those areas and making you sick. Your tongue is germ free only if it is pink.  If it is white there is a thin film of bacteria on it. Penicillin was called the "Miracle Drug" when it was first discovered in 1928 because it cured many diseases caused by bacteria that made people very sick. The amazing thing about penicillin is it comes from a mold - another type of germ. Vaccines are shots given to people, to help protect them from viruses, such as the flu. Viruses are usually around 100 times smaller than bacteria.