It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The human brain is more active during sleep than during the day.
28
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
There are about 255 babies born worldwide every minute.
46
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Only humans shed emotional tears.
331
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24