Amid the coronavirus pandemic, there's a bright side. As people around the world work to prevent contracting coronavirus, there's been an ongoing focus on properly washing your hands.
The CDC has advised scrubbing up for at least 20 seconds, which can make the ordinary regimen a bit trickier if you're not near a clock.
So, they've also suggested a handy trick—humming "Happy Birthday" in full twice to make sure you've hit the 20-second mark. However, some of the world's biggest stars have tasked their own famous tunes with keeping time, including Mariah Careyand Gloria Gaynor.
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