The average human body contains enough iron to make a small nail.
50
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
About half of all Americans are on a diet on any given day.
29
The human brain doesn't stop developing until about 25 years old.
102
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
A human being loses an average of 40 to 100 strands of hair a day.
133
The average sperm cell swims at 8 inches per hour.
76
A person infected with the SARS virus, has a 95-98% chance of recovery.
23