It takes only about 23 seconds for blood to circulate throughout your entire body. On the Go. Between birth and old age, you will walk about 70,000 miles. Walking is one of the best activities you can do to keep your heart-lung complex in good working condition. Exercise as a Drug.
Aerobic exercise is one of the best preventative medicines available and one of the cheapest.
A Matter of Gender. People with more education tend to be more physically active. Smaller than a Breadbox. The heart is a hollow, muscular organ that is roughly the size of a man's fist, averaging approximately 5 inches in length, 3.5 inches in width, and 2.5 inches in thickness. It weighs about 10.5 ounces in the male and 8.75 ounces in the female.