Pain travels through the body at 350 feet per second!
23
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Your tongue is the only muscle in your body that is attached at only one end.
173
Laughing could dramatically improve your health – and be as good for you as a deep state of meditation, researchers have found.
28
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Our brains have a negativity bias and will remember bad memories more than good ones.
15