The average human body contains enough iron to make a small nail.
50
A person can live without food for about a month, but only about a week without water.
156
Your skeleton keeps growing until you are about 35, then you start to shrink.
74
The whiter your tongue, the more germs there are on it.
88
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
The average female will have 3.3 pregnancies in her life.
49
Your thumb is about the same size as your nose.
124