A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
Men have larger hearts; women's hearts beat faster.
77
You inhale about 700,000 of your own skin flakes each day.
29
A fetus develops fingerprints at eighteen weeks!
32
The heart pumps about 1 million barrels of blood during an average lifetime!
30
The human body contains over a billion miles of DNA.
147
Sex burns about 360 calories per hour.
860