The adult human brain weighs about 3 pounds (1,300-1,400 g).
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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
Sex burns about 360 calories per hour.
861
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Your heart pumps about 2,000 gallons of blood each day!
53
Dentists have recommended that a toothbrush be kept at least 6 feet away from a toilet to avoid airborne particles resulting from the flush.
104