Should you wash bedsheets more often in the summer?

Drying outdoors: Experts say the sun's rays are a natural way to remove bacteria and also boost the brightness of whites
It's lovely to relax into cool, crisp and clean sheets in the summer, when you've been hot and sticky all day.
But those lovely clean sheets won't stay that way for long, because the sweat and dirt on your body from long days outdoors will transfer onto them, and they'll soon need washing again. The question is, how often?

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