You can't tickle yourself.
29
Yawns are more contagious among people with closer relationships.
163
The human brain is more active during sleep than during the day.
28
The human brain uses approximately as much energy as a 10 watt light bulb.
120
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Our brains have a negativity bias and will remember bad memories more than good ones.
15
One human hair can support 3 ounces.
191