|
|
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.