Your thumb is about the same size as your nose.
124
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The human sigh acts as a physiological reset button.
23
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
If you hold farts in during the day, they'll just come out when you sleep.
16
The average person's skin weighs twice as much as their brain.
131