Banging your head against a wall uses 150 calories an hour.
57
Only 1% of bacteria cause disease in humans!
2
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
The lense of the eye continues to grow throughout a person's life.
34
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
The human brain doesn't stop developing until about 25 years old.
102
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190