The adult human brain weighs about 3 pounds (1,300-1,400 g).
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It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
The average sperm cell swims at 8 inches per hour.
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Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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Your body is creating and killing about 2.4 million red blood cells per second.
17
The human brain doesn't stop developing until about 25 years old.
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After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55