There are few issues extra nice than letting the concerns of the day wash away and slipping right into a peaceable slumber whereas tucked up in mattress. However typically, simply as you are about to nod off, you are all of the sudden hit by a way of falling and your physique jerks you again awake once more. It is an alarming feeling, and a complicated one – to not point out a ache while you’re simply making an attempt to get evening’s sleep.
However why does this occur? Dr Amir Khan, who steadily dishes out well being recommendation on ITV’s Good Morning Britain and Lorraine, defined the phenomenon in a video on TikTok.
Dr Khan mentioned: “Have you ever ever felt you are falling simply as you nod off? That sudden jolt awake is definitely referred to as a hypnic jerk.”
Explaining extra, he continued: “As you drift into sleep, your muscle tissues chill out, and typically your mind interprets that as falling. It is a misinterpretation, so it sends a fast sign to your physique to catch you, and that is why you twitch awake.
“Now, some scientists suppose it is an historic survival reflex, again to once we slept in timber a sudden twitch might need stopped us from really falling. It’s very innocent. Extra frequent while you’re careworn, have caffeine late, otherwise you’re simply tremendous drained.”
Assuring viewers the phenomenon is “completely regular, completely innocent”, he concluded: So subsequent time it occurs, do not panic. It is simply your mind being quirky.”
What’s a hypnic jerk?
A hypnic jerk, quick for for hypnagogic jerk, is a sudden, involuntary muscle twitch that occurs as you’re transitioning from being awake to sleep, in accordance The Sleep Basis. The organisation provides 70 per cent of individuals expertise them sooner or later.
The Sleep Basis says: “Also called a sleep twitch, myoclonic jerk, or evening begin, it usually seems like a jolt, a falling sensation, or a sudden kick from your personal physique. These actions often have an effect on one aspect of the physique, like an arm or leg, and could also be accompanied by a short dream or startled feeling.”
The organisation added: “Researchers don’t know for sure what causes hypnic jerks, however there are some theories. Hypnic jerks and different kinds of myoclonus (involuntary muscle twitching) begin in the identical a part of your mind that controls your startle response.
“While you go to sleep, it’s suspected {that a} misfire typically happens between nerves within the reticular brainstem, making a response that results in a hypnic jerk. For instance, it could be that when your muscle tissues chill out fully, despite the fact that this can be a regular a part of falling asleep, your mind mistakenly assumes you’re actually falling and reacts by twitching your muscle tissues. It could even be attainable that hypnic jerks are a bodily response to the dream-like imagery that accompanies them.”
The organisation added doing the next issues might scale back hypnic jerks:
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