Human thigh bones are stronger than concrete!
63
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
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
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15