The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
Redheads require more anesthesia to 'go under' than other hair colors do.
50
It takes 17 muscles to smile, 43 to frown.
65
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
A human being loses an average of 40 to 100 strands of hair a day.
133