Every hour one billion cells in the body must be replaced.
17
Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
On average, there's 100 billion neurons in the human brain.
83
The average sperm cell swims at 8 inches per hour.
4
The whiter your tongue, the more germs there are on it.
88
More people have a phobia of frogs than rats.
41
A man once sued his doctor because he survived his cancer longer than the doctor predicted.
74
A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45