Question

why we should wash our hands for 20 second?
why not for less than 20 sec?


wrong answer will be reported and right answer will be brainliest..​

Answer 1

Answer:

Emory University’s Dr. Karen Levy says the 20-second rule has been around for so long, no one questions it.

Explanation:

“Your hands have many surfaces and parts to clean, and the lather needs to cover all of them to capture the germs within,” says Gilbert. “If you’re doing it right, 20 seconds allows enough time to be thorough and for soap molecules to do their job on the entire hand.”

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