When you take a step, you are using up to 200 muscles.
886
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The average person's skin weighs twice as much as their brain.
131
Yawns are more contagious among people with closer relationships.
163
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
Poor eyesight (myopia) is associated with higher IQ.
232
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190