Studies have shown us that you don’t need to have your water piping hot in order to kill the germs. In fact, you don’t need it to be hot at all. Not only this, studies also show that cold water is better for your hands than hot water is. It is a common misconception that hot water kills germs. While that is
kind of true, the fact is that the water needs to be incredibly hot in order for this to happen. Water that hot would damage your hands. So, stick to cold water and a good soap.
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