The average person's skin weighs twice as much as their brain.
131
If you hold farts in during the day, they'll just come out when you sleep.
16
The human body contains over a billion miles of DNA.
147
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Your heart will pump about 212 million liters in its lifetime.
26
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127

