Yawns are more contagious among people with closer relationships.
163
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
Every human spent about half an hour as a single cell.
144
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
91% of Americans eat turkey on Thanksgiving.
197
44% of kids watch television before they go to sleep.
106