In general, sleeping seems to be necessary for human functioning.The body needs a period of rest and relaxation in order to revitalize itself.
However, various arguments suggest that this explanation is not complete.For example, the majority of people sleep between eight and nine hours a night. However, there is great variability among people. Some only need three hours of sleep.
Sleep conditions also vary during a person's life.As people get older, they need a lower amount of sleep.
If the function of this one is to restore the body,it is difficult to understand why older people need a smaller amount of sleep than younger people.
Otherwise,people who participated in sleep deprivation experiences did not show lasting effects.These experiments involve keeping them awake for periods of up to 200 hours without sleep.
People subjected to these experiences feelfatigue, lack of concentration, irritability, decreased creativity and tend to have trembling handswhile they are kept awake. Nevertheless, when they are allowed to sleep, they quickly return to their normal state.
Sleeping is a biological need
Sleep is a biological need which allows to restore the physical and psychological functions essential to a good performance. Sleep and waking are brain functions and are subject to alterations of the nervous system.
During sleep occurhormonal, biochemical, metabolic and temperature changes.All these changes are necessary for the proper functioning of the human being during the day.
Researchers have discovered that sleep is vital for us to learn. It is intimately related to the nature weather map and has a critical transcendence for health. However,we do not yet know exactly what its function is.
The most accepted research links sleep with body tissue repair and energy conservation and recovery.Moreover, they link it to the consolidation and maintenance of memory. While sleeping, our brain "repairs itself". It's like we bring him to the garage.
Why are we sleeping?
There are two mechanisms or processes that are responsible for sleep.The "S" process is determined by the person's previous sleep and waking history.It manifests itself in a greater propensity to sleep after sleep deprivation. It's a bit like the accumulation of a debt.
Process "C" is controlled by the endogenous biological clock and is independent of the waking and sleeping history. We tend to sleep during the phase of falling body temperature. This is the first part of the night. We wake up when the temperature rises (second part of the night).
What happens when we do not sleep?
The day before, slow sleep and rapid sleep must be smooth to ensure the health of a person.The impact of sleep deprivation is powerful. It does not only affect the physical plane: it also affects the psychological field.
Here are some effects of sleep deprivation:
- Memory alterations
- Symptoms similar to Attention Deficit
- Impaired immune system
- Decreased ability to react in time and accurately
- Poor manual coordination
- Risk of obesity
- Increased heart rate variability
- Risk of infarction
- Neurological alterations
- Epileptic seizures
As we see,to sleep seems necessary.At least, it is clear that if we do not do it, we will have many problems.
The beneficial effects of sleep
In addition to being a great pleasure for many people, sleeping well has positive effects on our body. Some specialists consider thatthere are six beneficial effects.
- Sleeping improves memory.According to various researches, taking a nap of 90 minutes helps to fix memories and skill.
- While sleeping, we protect our heart.People who sleep little or poorly have three times more chances of suffering from heart failure.
- Depression can be reduced by sleeping.When we sleep, we relax. This facilitates the production of serotonin, which fights against the effects of the stress hormone. Therefore, it helps us to be happier.
- We are in better health.Sleep time is used to regenerate our immune system.In this way, we can fight toxins and defeat infections.
- Sleeping helps to lose weight.Lack of sleep causes adipocytes or fat cells to release less leptin, the hormone that suppresses appetite.
- We improve our creativity.If the brain is rested, the memory works perfectly. Our imaginative capacity is therefore greater, which facilitates creativity.
It is therefore obvious that the benefits of sleep (especially if it is of quality) are numerous and important.In addition, lack of sleep has negative consequences that, in the long run, can be extremely harmful.