Sleep is energizing, but sometimes it seems that’s not true — we Wake up tired and sluggish, as if not slept
After a full sleep is supposed to be cheerful, fresh and cheerful. Instead, we often Wake up with bad mood and irritability. Why is this happening?
The accumulation of adenosine in the brain
The last few hours before awakening we spend in REM sleep. This phase is characterized by increased brain activity. The most noticeable symptom is a rapid movement of the eyeballs. Cycles of fast and slow sleep per night are repeated 4-5 times. It is during REM sleep we see vivid dreams.
In this phase, the brain consumes an impressive amount of adenosine triphosphate (ATP). It is the source and carrier of energy in cells. Adenosine suppresses the vigor and alertness and stimulates sleep, which we Wake up sleepy.
Partner and its absence
The condition after waking up also affects that you slept with someone or not. For example, women who share a bed with a man, say reducing the quality of sleep. But if the sleep is preceded by the sex mood of women is improving, it tolerates mediocre sleep and morning fatigue. Men noted a decrease in sleep quality when they are spending the night alone.
Owls are more likely to suffer from insomnia. Night of wakefulness will affect the hippocampus, which is responsible for emotions, memory and attention, and can even contribute to the reduction of its volume, which leads to lower learning and memory loss and can also be an early sign of Alzheimer’s disease.
What we snack before sleep also affects our mood. Recent studies have shown that the consumption of sweets before bedtime can improve the condition in the morning. Elevated sugar levels in the blood causes the activity of neurons responsible for sleep. For the same reasons, after a heavy lunch makes one sleepy.
Scientists still don’t know why we sleep. But they know exactly what we need not less than 6-8 hours of sleep every day. Lack of sleep leads to irritation and activates the bad memories and negative emotions. Emotional instability is a consequence of the inability of the front lobes of the brain to control the limbic system.
Sleep disturbance also affects memory and severe insomnia can lead to hallucinations. Constant poor sleep can cause autoimmune diseases, cancer, and depression.
We will remind, doctors told why morning headache: the causes
As reported Politeka, scientists have uncovered the secret to fall asleep fast: “in just three steps”
Politeka also wrote that the doctor said, why have nightmares: “It affects the whole body”