Your thumb is about the same size as your nose.
124
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Your body is creating and killing about 2.4 million red blood cells per second.
17
Held in farts enter your bloodstream and are bad for your body.
26
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22