It is not a secret that human health directly depends on such a factor as healthy sleep. Sleep is the most important state of brain activity, a source of well-being and of the preservation of mental and physical health. In today's world, many people, including students, regard sleep as a luxury. People often overlook the potential health consequences of lack of sleep.
The Effect of Sleep on Human Health
Currently, one of the main directions and trends in education is the creation of a health-saving learning space that allows optimizing the current psychophysical state of students, providing training for highly qualified specialists.
Everyday learning requires students not only diligence but also good health and psychophysical preparedness. The research of the time budget of students of higher educational institutions showed that the total load of educational work, including self-training, averages 9-12 hours a day. This is a very significant psychophysiological burden on the organism of a young person.
To date, most scientists have concluded that a healthy sleep can be as important to health as nutrition and exercises. Reducing sleep only two or three hours a night can have adverse health consequences, namely, increase the risk of developing a number of diseases. Lack of sleep ultimately affects a person's life expectancy. Some scientific studies suggest that five or less hours of sleep per day can increase the risk of death by 15%.
Sleep is one of the basic states of the body, in which a person spends up to one-third of life. This is one of the most effective means of dealing with nervous overloads. Deprivation of sleep causes deterioration in memory and attention, decrease in the functionality of the body, the emergence of anxiety and depression, and mental disorders. Normal sleep is one of the most important conditions for maintaining and strengthening health and productive activities.
Primitive tribes fell asleep at sunset and woke up early in the morning, and in the afternoon they arranged for themselves a "quiet hour" twice a day (afternoon and after 4 p.m.). Daytime sleep is a physiological need, especially for those who are deprived of full night's sleep.
Insomnia is one of the frequent sleep disorders. Even a small break in night sleep leads to the decrease in the activity of important cells of the immune system, which provides suppression of infections. Its causes may be the violation of the regular sleep (night work, late employment), an unusual place to sleep, an agitated psycho-emotional state, high physical activity or, conversely, lack of muscle activity, and information overload. Insomnia is the first symptom of the beginning of neuroses, psychoses, organic brain diseases, diseases of internal organs and endocrine systems.
Chronic Lack of Sleep and its Danger
Currently, not less than 50% of the population in developed countries suffers from sleep disorders, and 13% of them have a rather serious problem with it. Throughout life, 95% of people have sleep problems, and most people with insomnia do not receive any treatment. In recent years, the prevalence of these violations is increasing, which is related to the working conditions and the way of life in a modern developing society.
People often do not realize that they are in danger since sleep deprivation can affect the function of the immune system, our ability to fight infections is becoming increasingly difficult, and we are more likely to get an upper respiratory infection such as a cold and flu that may grow into chronic lung and heart disease.
Lack of sleep is also associated with obesity and diabetes. With sleep deprivation, the ghrelin hormone increases, which is associated with the feeling of hunger for foods high in calories. There is also decrease in the hormone leptin, which reduces appetite. It leads to weight gain.
Healthy Sleep and Student Lifestyle
According to the results of the scientific research, the incidence of students in recent years has grown significantly. It aggravates the state of health of learners with a tense mode of educational activity, excessive mental stress, reduced motor activity, violation of the rest regime, nutrition, and sleep. Such a phenomenon undoubtedly adversely affects the quality of life of a significant part of students.
Modern students spend an average of 6 hours a day on sleep. In fact, this time is not enough for rest and reinstatement of forces. Studying at a university or college requires a lot of energy. Physical and mental loads tire the nervous system and the entire body. Therefore, it is necessary to rest at least 7-8 hours at night. Even a slight lack of sleep can lead to serious health problems. It is important not just to sleep the required number of hours, but also to ensure calmness and relaxation. Only under such conditions, the human body can be fully resumed.
Some students may believe that sleepless night before an exam can improve their memory, and, consequently, the grades. The data proved by experience show that subjects who were deprived of sleep for 30 hours did not show any improvement in performance, even after two days of restoring sleep. In another study, students were offered a 16-hour wake period and an 8-hour sleep period. After a night's sleep, the performance of the subjects improved by 18%. These studies prove that sleep is necessary for learning and developing memory. Therefore, it is so important to learn how to manage your time properly and have healthy sleep.