Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
The human brain is insensitive to pain.
76
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Foreign accent syndrome is a rare brain disorder which causes people to speak in a foreign accent involuntarily.
15
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57