BODY OF KNOWLEDGE [via Nina Reznick]


1. Your body measurements equal each other

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You’re likely to have seen the Vetruvian Man, the famous sketch by Leonardo da Vinci. It’s one of the earliest and best explorations of anthropometry, which is the scientific study of the measurements and proportion of the human body. Did you know, for instance, that your foot will fit neatly into your forearm? Or that your height is equal to the span of your arms when you stretch your legs out to the side?

What’s more is that your height is approximately 10 times the length from your wrist to the tip of your middle finger. Anthropometric correlation is more than just a bit of fun – anthropologists use it to determine how tall the owner of a particular bone is.

2. You’re tallest in the morning

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NASA astronauts can be as much as two inches taller in zero gravity, and that’s because the absence of gravity prevents compression of the discs in the spine. The effect isn’t nearly quite as pronounced here on Earth as it is in space, however, our joints decompress when we lie down because gravity isn’t literally pulling us down. As a result, we’re tallest when we wake up we get out of bed in the morning.

3. Your body is capable of boiling water

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The human body is capable of generating enough heat in just half an hour to bring half a gallon of water to the boil. With that being said, it regulates itself to keep itself at 98.6 degrees Fahrenheit in spite of all the biochemical reactions that occur within it and give off a lot of heat. This same process also makes the body electric. In fact, it gives off about 100 watts of electrical energy when at rest, which is the same as your average light bulb. A sprinting athlete can give off as much as 2,000 watts.

4. Your bones are stronger than steel

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Inch for inch, human bones are stronger than steel. A cubic inch of bone can withstand a weight of 19,000 pounds. To give you an idea of how strong that is, helicopters, small jet, and semi-trucks weight about 14,000 pounds, whereas a large male elephant weighs in at about 15,000. In addition, bone immediately begins to repair itself when broken – steel doesn’t.

5. Your hair is as durable as rope

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The story of Rapunzel allowing the prince to climb up the tower she was imprisoned in using her tresses as a rope is far from implausible, and that’s because a rope of hair can actually withstand the weight of several men. A single strand of human hair can bear about 3 ounces of weight, but if you multiply that number by the average number of human hairs on a woman’s head, the hair would be capable of bearing a weight of 12 tons. Furthermore, flammability aside, hair is virtually indestructible.



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