Your heart will pump about 212 million liters in its lifetime.
26
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
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
The human sigh acts as a physiological reset button.
23
The human brain is more active during sleep than during the day.
28
The average sperm cell swims at 8 inches per hour.
4