5 superpowers ordinary people
The human body - this thing is very complicated and delicate. Evolutionary mechanisms continue to function now that in combination with genetic mutations allows scientists to find people (and even whole nations), which have some differences in their physiology. Some of these abnormalities are quite useful, as are the consequences of hereditary adaptation to the external environment.
1. The ability to carry heavy frost
of man's evolutionary rather adapted for survival in a hot environment than in cold. This is eloquently testifies to the "norm" of human body temperature, which varies between 36.5 - 37.5 degrees. However, some people of exclusion. For example, Eskimos and the Nenets have adapted to the extremely low temperatures. The body of the people are not so sensitive to cold than those that come from warmer latitudes.
At the "northerners" higher the metabolism, as well as higher skin temperature compared to most people in the world. They also have fewer sweat glands, allowing them even less cold.
2. Life at high altitudes
When an ordinary person gets (for example) to a height of 5000 meters above sea level, it appears the risk of altitude sickness - hypoxia, that starts due to lack of oxygen. Shortness of breath, decreased blood pressure, headaches and dizziness - these are the main symptoms of this disease. However, in some cultures, such as Quechua, more adapted to life in the mountains. Studies have shown that the representatives of the people more than the volume of the lungs. Even more interesting is the fact that their bodies react very differently to reduce the oxygen level in the air. In contrast to the inhabitants of the plains, their body produces fewer red blood cells, rather than more, which saves the Quechua from the thickening of blood.
3. Stronger bones
The loss of bone mass - is part of the aging process. Sometimes, due to a genetic disorder, the person may begin to lose weight much earlier. However, there is a rare genetic disorder that occurs only while South Africans of European descent. They do not lose bone mass and gain.
Scientists believe that this is due to the release of hormones sklerostina, which is responsible for bone metabolism. This mutation is not really pleasant. As well as the loss of bone mass, it can cause serious diseases.
4. A clear vision under water
Most people can not see clearly underwater. The picture before our eyes becomes quite blurred. The exception to this rule are mokeny - representatives of ethnic groups that are found in the south of Thailand and Myanmar. These islanders ply fishing. Some even call them "sea nomads". Since water is denser than air, and its optical data are close to those of the cornea and lens of the density of the human eye, people can not see properly under water. This is because the eye in such circumstances can not create a proper refraction of light. Underwater goggles solve this problem by creating air pockets.
It is noteworthy that the eyes of the Moken children are like dolphins eyes. They can be reconfigured in a special way to see almost perfectly underwater. Another interesting fact is that the adult members of this nation almost always lose this ability.
5. The ability to sleep less than six hours
To restore power, most people need 7-10 hours of sleep. However, there are people with a useful genetic mutation that allows successful "reboot" your body for 6 hours or less. The secret of such a deviation in the DEC2 gene. Due to mutations in some people faster than the phase of sleep efficiency. The same mutation protects its wearer from the effects of lack of sleep. According to the researchers, people with altered DEC2 in the world is very small. Approximately 1% of the world population.