In the average lifetime, a person will walk the equivalent of 5 times around the equator. Cats sleep 16 to 18 hours per day. Stressed is Desserts spelled backwards. If you stay up all night, your body burns an additional 161 calories. A goldfish has a memory span of three seconds. Bubble gum contains rubber. It's impossible to sneeze with your eyes open. Slugs have 4 noses. The average person laughs 15 times a day. The longest one-syllable word in the English language is "screeched." Thomas Edison, lightbulb inventor, was afraid of the dark.Alex. 14. Canada. Twitter: @alexxtch //