the 'mighty' heart

and speaking of......the heart. Though weighing only 11 ounces on average, a healthy heart pumps 2,000 gallons of blood through 60,000 miles of blood vessels each day. And......Blood is actually a tissue. When the body is at rest, it takes only six seconds for the blood to go from the heart to the lungs and back, only eight seconds for it to go the brain and back, and only 16 seconds for it to reach the toes and travel all the way back to the heart. Provided by RandomHistory.com

your heart

and speaking of......your heart. The average heart beats 100,000 times per day -- in an average life span, this amounts to as many as 3 billion heart beats. The heart pumps blood through a series of vessels ranging in size from the aorta, which is as thick as a garden hose, to capillaries, which are so small a dozen of them could fit inside a human hair. Every 24 hours, the body's blood travels about 12,000 miles, a trip that comes close to equaling the Earth's circumference at the equator, around 24,800 miles. Credits: The World Almanac 2010