If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Applying vodka to your face helps tighten your pores and can reduce the risk of acne breakouts.
19
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
The Internal Revenue Service audits 87 percent of women who claim breast implants as tax deductions.
54
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Every hour one billion cells in the body must be replaced.
17