Have you ever seen something so gross it made you want to puke? Or actually puke? Your caveman brain might be trying to protect you. Find out why nasty things make our stomachs churn.
WHAT'S INSIDE: HUMAN BODY
- Body Parts
- Body Systems
You may never have thought about it (unless your child asks), but boogers are sticky for a perfectly logical scientific reason.
By waxing, shaving, plucking and shearing, we manage to keep unwanted hairs at bay. But considering how much you shell out for new razors and your trips to the salon, it's a wonder that we bend over backward to groom a bunch of dead cells.