The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Human teeth are almost as hard as rocks!
47
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
More people have a phobia of frogs than rats.
41
A study in the UK states that men need at least two "guys nights out" each week to stay healthy.
5
During a typical human life span, the human heart will beat approximately 2.5 billion times.
21


