Human thigh bones are stronger than concrete!
63
Your thumb is about the same size as your nose.
124
Kissing an infection-free partner is good for your teeth!
141
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
The human heart creates enough pressure to squirt blood 30 ft.
37
Unlike dogs, pigs, and some other mammals, humans cannot taste water. They taste only the chemicals and impurities in the water.
95
If you are bitten by a poisonous snake, and fail to receive medical attention, you still have a 50% chance of survival.
28
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15