Sleep disturbances are possible for various reasons. There are few people who have not experienced such a state at least once a month. Both the little things and the big problems interfere with sleep. You can’t fall asleep because of persistent thoughts or physical pain, you wake up at night because of nightmares or the natural needs of the body, etc. Everything disturb sleep: stress, neuroses and depression.
What makes us wake up is still not completely clear to specialists. Some of them argue that sleep and fatigue are phenomena of the same series. Our nerve cells get tired, as their energy reserves are expended faster than replenished. Therefore, the brain and other nerve centers need complete rest. After sleep, we feel a surge of energy.
Other scientists suggest that we fall asleep due to the fact that one of the nerve centers that regulate the contraction and expansion of blood vessels gets tired. And because of this, the blood vessels cut off the blood supply a little, and in the end we fall asleep.
There is another theory of sleep and awakening, according to which a person has a “wakefulness center” in the lower part of the brain and our state of rest or sleep depends on the signals that we send to this center.
It turns out that sleep is a periodically advancing state of a person, during which he restores the working capacity of his body, including the central nervous system. Sleep is a vital necessity for every organism. A third of our life is spent in a state of sleep.
During sleep, there are phase changes in muscle tone, weakening of all types of sensitivity: vision, hearing, taste, smell and skin. When we sleep, our body temperature drops. This is why we take cover at night or dress warmer.
The most common sleep disturbances include increased sleepiness and insomnia . Increased sleepiness sometimes occurs in people who have had severe illnesses. Insomnia is more common, it can even accompany various diseases. Frequent sleep disturbance leads to chronic insomnia .
During insomnia, a person has difficulty falling asleep, his sleep is superficial, accompanied by early awakenings, and in the morning he often complains of lack of sleep. But still, people sleep during insomnia, and their sleep duration is on average 5 hours. The problem is poor sleep quality. The quality of night sleep is influenced by the entire life cycle: wakefulness, daily routine, physical and mental state, i.e. our sleep depends on the level and quality of life.
Imagine that during sleep you feel thirsty, cold or anxious, or any other strong emotional state. In all these cases, sleep disturbance occurs. We wake up.