Flu shots only work about 70% of the time.
18
Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
In one day, adult lungs move about 10,000 litres of air.
11
It is possible to go blind from smoking too heavily.
50
The human body contains over a billion miles of DNA.
147
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
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
A person infected with the SARS virus, has a 95-98% chance of recovery.
23