What is the impact of cold on the human body ?
According to anthropological theories, man owes his good health exceptional cold.The last ice age has forced us to come down from the trees and migrate to the plains separating ultimately our ancestry from gorillas and chimpanzees.Life on the Plains was continuous tests that have honed our survival skills and help a person to become born with high adaptive capacity, what we are today.
Why do we try to avoid the cold?
our instinctive desire to avoid cold weather can be the voice of our past collective experience of how devastating its effects can be.Statistics tells us that cold weather is responsible for a much larger number of illnesses and deaths than hot.Research into the cold reaction of the human body in a variety of both natural and artificially complicated conditions reflect our desire to seek the best ways to protect against the cold kind of threats.As we can see, for the development and manufacture of protecting from atmospheric influence of clothes, better kinds of insulation in homes, schools and offices, as well as adapted to the winter forms of transport are various modern technologies.
On cold responds not only to the body
Our mind and emotional state is also subject to its influence.In the natural world, autumn and winter are the end of the cycles that occur from conception to flowering, fruiting, and finally death.Autumn - the most fertile time when we begin to accumulate the strength to survive the long dark winter months.Our body knows it, but the mind can not know.Part of the heat needed by the body, formed during digestion, and in the autumn, a period when people are no longer fills the food, the usual for the summer.In the autumn of our energy consumption, especially of carbohydrates may increase by about 222 calories per day.Now researchers believe that this autumn (winter and not, as many people think) is the time when we.often gain weight.This is probably a kind of insurance against the heat coming cold.Riot of autumn, changeable weather can also bring a certain kind of health problems - headaches and allergies, exactly the same as on windy days in any month of the year.
In the natural world, winter is marked by a sleepy state, and hibernation.Plants and animals are aware of this, but the man has lost touch with the seasonal rhythm - at least on a conscious level.Despite the fact that in their minds we struggle with this winter apathy, our body is really going through a stage of preparation, which we perceive as lowering activity.This confirms the natural inclination to some form of hibernation.
Heat and cold
If you do not address the issues of digestion, our body has two mechanisms: heat preservation and energy saving.Since the internal organs must be kept at a constant temperature, with the first cold weather arrives signal restrict blood flow to the external organs - the skin and superficial tissues, which reduces heat transfer by radiation and convection.It is because of the outflow of blood from the extremities we primarily frozen fingers and toes, nose and ears.
If we do not bother to find shelter and warmth, our body includes another mechanism - shudder.What we feel when shivering, a series of unintentional muscle contractions in order to develop heat.This mechanism occurs much faster if a person is malnourished, is influenced by stress, fear, or pain.
However, both mechanisms are protected only for a short time.The body can not ever take blood away from the extremities, as well as endlessly shiver.It's just a signal that we need to find shelter and get warm.If you do not, perhaps, frostbite, hypothermia (hypothermia), or even death.