On average, there's 100 billion neurons in the human brain.
83
The human brain is more active during sleep than during the day.
28
The average sperm cell swims at 8 inches per hour.
4
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
Taphephobia is the fear of being buried alive!
44
After an 11 year study, cell phones were shown not to increase chances of getting cancer.
14
Enamel is hardest substance in the human body.
61
There are 206 bones in the human body!
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