The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
One human hair can support 3 ounces.
191
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Yawns are more contagious among people with closer relationships.
163
Chewing gum boosts your brain power.
285
The average person's skin weighs twice as much as their brain.
131
The average sperm cell swims at 8 inches per hour.
76