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The hibernation is a physiological state that some adopt animals for adapt to extreme weather conditions of the winter . When hibernating, these species decrease your metabolic functions to save energy.

The metabolism of animals that hibernate, therefore, is reduced in pursuit of the conservation of Energy . Hibernation, which can last from days to months, implies that body temperature drops, as does respiratory rate. The specific characteristics of the process, however, depend on each species.

While the hibernation goes on, the individual makes use of the energy reserves which accumulated during the warmer seasons. That's why a lot can happen weather Without eating food. By minimizing your breathing and your pulsations and interrupting the digestion work, the body spends little energy and uses its lipid stores to obtain the essential energy resources it needs while extending the period of "dream" or "doze" of hibernation.

The Bears They are animals that develop hibernation. That is why, in the winter, they remain in this state . When bears leave this state, they look much thinner than before winter and must adapt again to normal activities of eating and physical exercise.

Hibernation belongs to a group of phenomena called dormancy or sleep , which is defined as a period in the life cycle of an organism (animal or plant) during which its development, physical activity and growth are temporarily suspended. The conservation of energy during this period becomes possible because the metabolic activity is drastically reduced.

It is important to note that organisms can synchronize their dormancy stage with the environment, and this occurs in two different ways: predictive , the state of hibernation begins before the arrival of the terms which he intends to avoid, such as the intense cold; the consequent , begins after those conditions. Some plants predict the arrival of winter thanks to the photoperiod (the variations in the lighting they receive, which can alter their germination) or the temperature drop.

Hibernation is also called a condition similar to that of animals that can be generated in a human being through drugs . The notion can also be linked to the cryopreservation : the use of very low temperatures to conserve tissues and cellular functions.

In the plane of the theory , it is assumed that hibernation or a similar process could be useful for people to develop space travels They demand a lot of time. However, there is still no technology capable of generating such a state in a controlled and reversible manner.

For our species , hibernation is truly fascinating, partly because it is an absolutely natural state that reduces energy expenditure to almost nil levels. For example, the heart rate can reach 5 percent of its normal value. We could say that humans "envy" animals for being able to achieve so many things that are unattainable for us.

People often confuse this concept with wintering, but their meanings are different. Wintering is defined as spending the winter season somewhere favorable to resist cold . If we are strict, the dictionary does not even talk about the characteristics of the place, but simply refers to the action of staying there during the winter; two other meanings that it provides are the following: give the cattle good pastures to gain weight (it is used in Uruguay); take the cattle to the greenhouses to graze there (in Argentina, Uruguay and Chile).

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