In Japan, condoms are commonly sold 'door to door'!
54
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Your heart rate can rise as much as 30% during a yawn.
69
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
A person infected with the SARS virus, has a 95-98% chance of recovery.
23
The skin on your lips is 200 times more sensitive than your fingertips.
345