6. All humans swallow 8 spiders in their sleep every year.
Spiders don’t care about humans and they don’t want to climb us when we sleep. And that’s because their breathing and snoring are too heavy for them to be bothered to get close. We’re way too big for them to notice us – in many ways we can seem like just another feature of their natural landscape. Also, it would be really hard for somebody to not wake up if a spider is crawling around on their face and enters their mouth.