Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Babies crawl an average of 200m a day.
212
The average person's skin weighs twice as much as their brain.
131
Enamel is hardest substance in the human body.
61
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69