The internet is full of deep, dark rabbit holes. And some of those rabbit holes are filled with statistics. There are some facts that are so bizarre, disturbing, or terrifying that you almost wish you could unlearn them.

Or if you're anything like me — even when they're scary, you find the facts so intriguing that you just can't look away...

Over on Reddit, people are sharing the scariest statistics they know, and these are sure to make you stare at the ceiling in fear at 2 a.m. From mortifying facts about our health to weird things happening around the world, here are 13 of the spookiest responses:

1. "In a 2009 study of married patients with serious illness, 20.8% of relationships ended in separation or divorce when the woman was the affected partner, compared with 2.9% when the man was the affected partner."

"I worked with a woman who spent a summer volunteering for a nonprofit that takes people who use wheelchairs on recreational activities.

She said that most of the men showed up with a wife or girlfriend. The women were overwhelmingly there with a family member or a friend and very rarely there with a romantic partner."

4. "76% of female murders and 56% of male murders are committed by someone known to the victim. I know this is a common statistic, but if you stop and think about it, it's actually pretty wild that you are most likely to be victimized by someone you know."

6. "If a fire alarm is just a tone, children will wake up just over 50% of the time. If the alarm has a tone with a female voice saying something (fire, warning etc.) children wake up 86-91% of the time because of the 'maternal' voice!"

7. "Some galaxies in the sky are so far away that the expansion of distance between them and us is moving faster than the speed of light."

"That part always gets me, galaxies we can still see are already past the light-speed cutoff and we just wait for the image to catch up."