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If you make your bed immediately upon getting up, the sheets will trap millions of dust mites living in the bed, feeding on your dead skin cells and sweat, and potentially contributing to allergy and asthma problems. However, an unmade and open bed exposes these creatures to fresh air and light, which will help dehydrate and kill them.
Dr. Stephen Pretlove of Kingston University’s School of Architecture offers a simple explanation. When you make your bed, especially immediately after getting up, you trap your body heat, dead skin cells, and especially your sweat in bed. But leaving the bed unmade exposes the sheets to air and light, drying them out and reducing the lifespan of dust mites.
While we sleep, we sweat. The average person can sweat up to a liter per night. This creates an ideal breeding ground for dust mites.
Why this advice? Stop the number of dust mites living in your bed.
Scientists estimate that there could be as many as 1.5 million dust mites living in the average bed, feeding on dead cells we shed on our sheets while we sleep.
It’s not so much their existence, but their presence that poses problems for humans. Their excretions can increase dust allergies and trigger asthma flare-ups when inhaled.
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