Held in farts enter your bloodstream and are bad for your body.
26
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Your thumb is about the same size as your nose.
124
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The human brain doesn't stop developing until about 25 years old.
102
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515