Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
A fetus develops fingerprints at eighteen weeks!
32
Every year your body replaces 98% of your atoms.
119
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
Each nostril of a human being register smell in a different way. Smells that are made from the right nostril are more pleasant than the left.
38
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
40% of all indigestion remedies sold in the world are bought by Americans.
8