A ten-year-old mattress weighs double what it did when it was new due to debris that it absorbs over time. That debris includes dust mites (their droppings and decaying bodies), mold, millions of dead skin cells, dandruff, animal and human hair, secretions, excretions, lint, pollen, dust, soil, sand, and a lot of perspiration, which the average person loses at a rate of a quart a day.
23 years ago, 246 people went to sleep in preparation for their morning flights. 2,606 people went to sleep in preparation for work in the morning ow. 343 firefighters went to sleep in preparation for their morning shift. 60 police officers went to sleep in preparation for morning patrol. 8 paramedics went to sleep in preparation for the morning shift of saving lives. None of them saw past 10:00 am Sept 11, 2001.