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Midgets and dwarfs almost always have normal-sized children, even if both parents are midgets or dwarfs.
Moderate dancing burns 250 to 300 calories an hour. Twenty minutes of moderate dancing will elevate heart rate up to aerobic levels. One study found polkas, swing dancing, and waltzes to be particularly effective for weight loss.
More than 4 million artificial body parts have been installed in Americans.
The brain in a developing fetus grows by an average of 250,000 cells a minute.
The brain is not sensitive to pain. Headache pain originates in the nerves, muscles, and tissues surrounding the skull, not from the brain.
The brain is surrounded by a membrane containing veins and arteries. This membrane is filled with nerves of feeling. However, the brain itself has no feeling; if it is cut into, the person feels no pain.
More than half of school-age children in the United States have no cavities in their permanent teeth, compared with only 26 percent who were cavity-free in the early ‘70s, the American Dental Association has reported.
The brain is told which way the head is moving, and how fast the motion is, by the degree and direction the ear's canal hairs bend.
Most able people will walk 115,000 miles in their lifetime, or around the world 4˝ times.
The brain of Neanderthal man was larger than that of modern man.
Most newborns cry without tears until they are three to six weeks old.
The brain reaches its maximum weight at age 20: about 3 pounds. Over the next 60 years, as billions of nerve cells die within the brain, it loses about 3 ounces. The brain begins to lose cells at a rate of 50,000 per day by the age of 30.
Most of the chemicals humans can smell contain at least 3 atoms of carbon.
The bubonic plague was called the “Black Death” because of the black spots that appeared on the bodies of its victims. Plague victims also developed swellings and began coughing up blood.
Most people by the age of sixty have lost 50 percent of their taste buds and 40 percent of their ability to smell.
The cardiovascular system's circulation of blood supplies the cells with oxygen and food.
Most people's legs are slightly different lengths.
The characteristic red nose caused by broken capillaries, often caused by a person's excessive drinking over a prolonged period, is called rhinophyma, or grog blossom.
Most teenage boys think about sex once every 5 minutes.
The colon absorbs 3 pints (1.3 liters) of water every day from food waste.
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