You forget 90% of your dreams.
256
You can't tickle yourself.
29
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Poor eyesight (myopia) is associated with higher IQ.
232
Your fingernails grow faster in summer.
744
The human brain doesn't stop developing until about 25 years old.
102