Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
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
A person infected with the SARS virus, has a 95-98% chance of recovery.
23
Chocolate, sex, and laughter are all important for a healthy brain.
37
It takes approximately 12 hours for food to entirely digest.
93