HUMAN NUTRITION

Detailed explanation-1: -Scrub your hands for at least 20 seconds. Need a timer? Hum the “Happy Birthday” song from beginning to end twice. Rinse your hands well under clean, running water.

Detailed explanation-2: -Scientific studies show that you need to scrub for 20 seconds to remove harmful germs and chemicals from your hands. If you wash for a shorter time, you will not remove as many germs. Make sure to scrub all areas of your hands, including your palms, backs of your hands, between your fingers, and under your fingernails.

Detailed explanation-3: -Bump that washing time up to 20 seconds, water use climbs to nearly three-quarters (. 75) of a gallon. Many experts advise people scrub their hands for at least 20 seconds to achieve a thorough cleaning.

Detailed explanation-4: -If you are doing it right, 20 seconds allows for enough time to be thorough, and for soap molecules to do their job on the entire hand. “It takes time to clean all those surfaces effectively, ‘’ Gilbert says. “If you try to do it in half that time, you’re probably not going to effectively clean all of them.”