Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
More people have a phobia of frogs than rats.
41
It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
The human sigh acts as a physiological reset button.
23
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
On average, there's 100 billion neurons in the human brain.
83
In the average lifetime a person will breath in about 44 pounds of dust.
21