It takes 17 muscles to smile, 43 to frown.
65
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The human brain doesn't stop developing until about 25 years old.
102
Most dreams last only 5 to 20 minutes.
79
Pain travels through your body at 350 ft. per second.
36
Redheads require more anesthesia to 'go under' than other hair colors do.
50
Clinophobia is the fear of beds!
30
Every time you sneeze some of your brain cells die.
113