Everyone alive on Earth could comfortably be placed into a cube with sides 1000 meters long.
The scientific name for the belly button is the umbilicus.
Teeth are the only part of the human body which cannot heal themselves.
On average, a person needs seven minutes to fall asleep.
Right-handed people chew most of their food on the right side of their mouth, whereas left-handed people do so on the left.
Only 7% of people are left-handed.The fragrance of apples and bananas can help a person to lose weight.
If allowed to grow for their whole lifetime, the length of someone's hair would be about 725 kilometres.
Out of all the people who can move their ears, only one third of them are able to move just one ear.
During their lifetime, a person will on average accidentally swallow eight small spiders.
The total weight of the bacteria in the human body is 2 kg.99% of the calcium contained in the human body is in one's teeth.
Human lips are hundreds of times more sensitive than the tips of a person's fingers.
A kiss increases a person's pulse to 100 beats per minute or more.
The total strength of masticatory muscles on one side of your jaw is equal to 195 kilograms.
A person passes on 278 different types of bacteria to another person when they kiss them.
If you collected all the iron contained in the human body, you would get just a small cog, big enough only for use in your watch.
There are more than 100 different viruses which cause a cold.If someone kisses another person for a certain amount of time, this is much more effective in terms of hygiene than using chewing gum, as it normalises the level of acidity in your oral cavities.
You can lose 150 calories per hour if you hit your head against the wall.Human beings are the only animals which can draw straight lines.
Human skin is completely replaced about 1,000 times during a person's lifetime.A person who smokes a pack of cigarettes a day is doing the equivalent of drinking half a cup of tar a year.
Women blink about two times less often than men.
