The human brain has the capacity to store everything that you experience.
4k
Yawns are more contagious among people with closer relationships.
163
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Chewing gum boosts your brain power.
285
Enamel is hardest substance in the human body.
61
The average sperm cell swims at 8 inches per hour.
76