Why do I shiver when I sleep?

When people sleep, they enter a subconscious state, and most people sometimes feel that they suddenly shiver. Many people are confused about this situation and don't know what is going on. Most people say that leg cramps are caused by calcium deficiency, and sudden body tremors are a sign of growing taller. But is this really the truth? Let’s find out what causes shivering while sleeping.

1. Our limbs are mainly controlled by the cerebral cortex. When we enter a sleep state, the cerebral cortex will inhibit the activity of the limb muscles. However, the muscle nerves will have some spontaneous movements at this time. In addition, when we are asleep, the blood circulation in the human body is slower, and the small muscle nerve movements will be more obvious.

2. The sudden shaking when you are sleeping is because your nervous system finds that you have suddenly fallen asleep and have not moved for a long time. It thinks you are dead, so it moves to test whether you are dead or not... Just be happy. In short, it is normal for your body to shake suddenly when you are sleeping.

3. Symptomatic muscle twitching

If accompanied by headache, dizziness and other symptoms, a brain CT or MRI examination is required to determine whether this muscle twitching is a symptom caused by brain disease. Causes include: metabolic or storage diseases of brain cells, degenerative diseases of the brain, sequelae of cerebral hypoxia, sequelae of brain trauma, basal ganglia lesions, encephalitis, etc. In other words, if your body shakes suddenly and frequently while you sleep, it may be your brain sending you a distress signal, telling you that your health is starting to show red lights and you should see a doctor.

4. In fact, this phenomenon is called "hypnic muscle jerk" in medicine. Many people think that this is a phenomenon caused by physical illness, but in fact it is a normal physiological manifestation of our human body, just like hiccups. In addition, the transcendence that occurs during sleep is most likely caused by physical fatigue, or it may occur when we are too nervous and tired.