Warning: if you are accustomed to think of your bed as a happy wonderful place where you rest, on your own or accompanied by your significant other, and if you enjoy that vision of things, I prefer to warn you: this chapter will be terrifying and may change your approach to beds forever. Heed my words, this is a serious warning. Not a chapter for the faint-hearted.
10% of your pillow is not your pillow. What could that possibly mean? Well, I don't know how to tell you that without making your heartbeat stop, but be brave. If a tenth of your pillow is not itself, it is something else, and that something else, dear readers, is acarians. That's right, acarians. And to be more exact: acarians and their excrements. That is, 10% of the weight of your pillow is made of little ugly scary-looking bugs smaller than the naked eye can see and their horrible microscopic little turds. Try lifting your pillow with that in mind and see how tight you can sleep. Personally, last night was an effort for me.