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A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
In response to audio stimuli, the mind's way of interpreting sound can be translated through a regulatory process called the reticular activating system.Located in the brain stem, the reticular activating system continually listens, even throughout delta-wave sleep, to determine the importance of sounds in relation to waking the cortex or the rest of the body from sleep.
The scratch reflex is an automatic response to the activation of sensory neurons located on the surface of the body. [1] Sensory neurons can be activated via stimulation, such as a parasite on the body, but can also be activated by responding to a chemical stimulus that produces an itching sensation.
In feng shui, certain hours of the day are believed to be linked to different body parts. Therefore, waking up at the same time each night indicates an issue with that body part, or the emotions ...
The most important thing to do when waking up in the middle of the night is to resist looking at the clock, Peters-Mathews said. “If the alarm is not going off, it’s not time to wake up. It ...
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Referred itch or mitempfindung is the phenomenon in which a stimulus applied in one region of the body is felt as an itch or irritation in a different part of the body. The syndrome is relatively harmless, though it can be irritating, and healthy individuals can express symptoms.
Beyond our joints and muscles simply getting older, here is a closer look at the most common reasons for your body aches, why your body responds with pain in the first place, and how to find ...