90% of adults wash their hands incorrectly. The right way is the "seven-step handwashing method", which can remove 90% of the bacteria on the hands, while the regular rinsing can only remove about 18%. It is best to use the "seven-step handwashing method" to wash your hands. It takes at least 40 seconds to wet your hands, wash them, and dry them. The specific steps are as follows. First, you should put your palms opposite, and rub the fingers. Second, the back of one hand should be rubbed by the other palm along the finger seams alternatively. Third, you should put the palms opposite, cross your fingers and rub the hands together along the finger seams. Fourth, you should bend the finger joints, rotate and rub them in the palm of the other hand, and exchange hands afterwards. Fifth, hold the thumb of the other hand, rotate and rub, and exchange hands. Sixth, put the fingertips of the five fingers of one hand together in the palm of the other hand, then rub and wash the fingertips. Seventh, clean the wrists alternatively. However, it is not true that the more frequent hand washing leads to the better health. The key is the timing. In addition to washing your hands before meals and after using the toilet, you should wash your hands in time before taking medicine, as well as after visiting the hospital, touching cash or coins, shopping, and etc.