Our company 24 / 7 invaded the night, instead of a biological nature developed by millions of years of evolution with an illusion
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Our lives are governed by time and use the time to tell us what to do. However, digital alarm clock that wakes us up in the morning or the wristwatch that tells us who is late for dinner are natural clocks. Our dance old biology probably began to score early in the evolution of life.
rooted in our genes, and almost all life on Earth, are the instructions for a biological clock that marks the passage of approximately 24 hours. This "day" regulates everything we do. It can even affect our ability to learn and do the right tests.
clocks or "circadian clock" (
days) the time to help our sleep patterns, alertness, mood, physical strength, blood pressure and more. The clock is used to anticipate the different demands of 24 hours per day and adjust physiology and behavior in advance of changing conditions.Meanwhile
go to bed, the body temperature down, lowers blood pressure, decreased cognitive performance and increased fatigue. Before dawn, the metabolism is prepared in anticipation of increased activity when we wake up.
Few of us enjoy the inner world, however. We are seduced by the apparent freedom to sleep, work, eat, drink or travel whenever we want.
body clocks differ between people. If you are alert in the morning and go to bed early you are a "lark", but if you do not want the morning and continue all night, you're a "cool". These differences are partly encoded in our genes, but also a significant change in age. In our first decade, which tend to wake up early, but at the time of puberty both bed and wake drift and sometimes hours later.
This trend continues to increase later, at the age of 19.5 years for women and 21 men. There is an investment and a drift into a dream and not before time. At the age of 55 to 60 who get up as soon as we did when we were 10.
This may explain why young adults have a problem getting up in the morning. Adolescents show both delayed sleep and high levels of sleep deprivation, because they go to bed late, but always having to get up early to go to school.We used to think that the biological rhythm of 24 hours has been driven exclusively by a group of 50,000 neurons called the suprachiasmatic nucleus (SCN), located in the hypothalamus at the base of the brain. However, cells isolated from almost any organ in the body also expresses clock genes and proteins. We now understand that the SCN acts as a pacemaker lead, coordinate all activities of cellular clocks in a way that has been likened to a conductor which regulates the time of many and varied components of the set.
In the absence of the SCN, the individual cellular clocks on organ and the collapse coordinated circadian rhythms - a condition called internal desynchronization. This, of course, is the main reason I feel so bad because of the time. All the various organ systems, including brain, liver, intestines and muscles work at one time a little differently. Only when the internal clock has been re-aligned can function normally again.
The daily cycle of light and darkness outside normally acts to synchronize the circadian system. How this could be explained by the discovery in recent years, a new type of light receiver in the eye. It turns out that, in addition to bars and the family of cones that give us normal vision, we all have photosensitive ganglion cells of the retina (MCSP). They contain a photosensitive pigment called Opn4, which is more sensitive in the spectrum of blue light with a wavelength of maximum sensitivity of 480 nanometers.