10 Amazing Things About Our Bodies

10. You Can’t Swallow and Breathe at the Same Time. Virtually every other mammal can; human babies can until they’re about 9 months old. Around this time the voice box drops quite low in the neck compared to other animals, which allows us to have a wide range of sounds for speech – but takes our ability to breathe and eat or drink at the same time. 9. You Have Two Brains. Just as you have neurons in your brain, you also have neurons in your gut – including neurons that produce chemicals like serotonin, which is also found in your brain and is linked to mood. Your gut literally serves as your second brain, and even produces more of the serotonin – known to have a beneficial influence on your mood – than your brain does. In other words, you have two nervous systems: the central nervous system, composed of your brain and spinal cord, and the enteric nervous system, which is the intrinsic nervous system of your gastrointestinal tract. Both are actually created out of the same type of embryonic tissue. During fetal development, one part turns into your central nervous system while the other develops into your enteric nervous system. To put this into more concrete terms, you've probably experienced the visceral sensation of butterflies in your stomach when you're nervous, or had an upset stomach when you were very angry or stressed. The flip side is also true, in that problems in your gut can directly impact your mental health, leading to issues like anxiety or depression. 8. Loneliness is Physically Painful. Loneliness is emotionally painful for sure, but it’s physically painful as well. Both loneliness and physical pain are processed in the same region of your brain, the anterior cingulate cortex. So just as you have a powerful drive to avoid causing physical pain to your body, you have a similarly powerful drive to connect with others and seek companionship – in order to avoid painful feelings of loneliness. 7. You Salivate More Before You Vomit. Because stomach acid can be harsh on your throat and mouth, the extra saliva helps dilute the acid and rinse it away to minimize any damage caused by vomiting. 6. Sugar Can Help Your Wounds Heal. Not by eating it, but rather by sprinkling it directly on the wound. Sugar is hygroscopic, which means it absorbs water that bacteria need to survive. This method has been popular among healers in Africa for generations, and it is reportedly useful for bed sores, leg ulcers, amputations and more. A twist on this idea is to use honey, which will help draw fluid away from your wound and suppress the growth of microorganisms. Part of what gives honey its antibacterial properties is an enzyme called glucose oxidase, which the worker bees excrete into the nectar (this is found only in raw honey). Another part is the presence of beneficial Lactobacillus bacteria, found only in raw honey, which fight infection. 5. Memories Work in Mysterious Ways. Have you ever walked into a room and then forgotten why you went there in the first place? This is because your brain perceives the doorway as an “event boundary,” and memories from the room you just left are “stored” there for when you need them. This is why when you go back through the doorway into the prior room you can often remember what it is that you forgot! 4. Some Women See More Colors. Most people have three types of color receptors that allow them to see color. Some women have four, which allows them to see a wider range of colors (a small percentage of women even have five color receptors). Why women? The red and green color receptors, which can be shifted to allow for a greater range of color vision, are located on the X chromosome; blue is on the Y. 3. It Might be Healthy to Eat Boogers. Your nasal mucus might be host to small amounts of contaminants (acting as antigens) that may actually boost your immune system when they’re consumed. So contrary to the belief that eating boogers could make you sick, it might actually help your body to fight off illnesses. 2. Most People Only Breathe Through One Nostril at a Time. Though you’ve got two nostrils, about 85 percent of people only use one at a time. Tissue in your nose slowly swells in one nostril while shrinking in the other, so you automatically switch breathing between nostrils about every four hours. Interestingly, body position, illness and other factors can influence which nostril you breathe from when, and, in turn, the nostril you’re breathing from can impact your health. For instance, breathing through the right nostril causes you to use more oxygen and raises your blood sugar levels. 1. Seven Miles of New Blood Vessels for Every Pound of Fat Gained. When you gain a pound of fat, your body makes seven new miles of blood vessels. This means your body must work harder to pump blood through all of these extra vessels, which will put a strain on your heart, and may reduce oxygenation and nutrient replenishment. If you lose a pound, your body will break down and re-absorb the now unnecessary vessels. Seven More BONUS Facts! 1. A Crease in Your Earlobe May Predict Heart Disease: A diagonal crease in your earlobe is linked to a much higher risk of coronary artery disease and sudden cardiac death in men. 2. Yawning Helps Cool Your Brain: Yawning is an involuntary behavior that may perform the important function of cooling your brain. When you yawn, the influx of cool air may ventilate your sinuses and facilitate brain cooling. 3. Your Largest Organ is Only One Cell Thick: It’s your endothelium, the interior lining of your body’s 60,000-miles (plus) of blood vessels. If stretched out, your endothelium, which helps regulate blood pressure, control blood clotting and fight disease, would cover six tennis courts. 4. Some People Taste Words: Your senses of taste, sound and sight are typically separate experiences, but in people with a condition called synesthesia, the senses overlap. These people may be able to “hear” colors and “taste” words as an ordinary part of life. 5. You Can Smell Fear: Bodily sweat contains different pheromones when you’re frightened or not. People can detect the differences in their smell, and when they sniffed sweat from skydivers, it caused brain regions that react to fear to become active (which did not occur from sweat from treadmill users). 6. Women’s Tears Prompt Physical Changes in Men: When men sniffed women’s tears brought on by negative emotions, it led to reduced levels of sexual arousal and testosterone. 7. You Close Your Eyes When You Sneeze: This is caused by a reflex similar to what occurs when your knee is tapped with a rubber mallet. It’s extremely difficult to keep your eyes open while you sneeze, even if you try. Source: mercola.com, 10/10/12