Please register and log-in to create and edit pages

User Tools

    Please register and log-in to create and edit pages

Site Tools


Main Menu

Main menu
Click categories to expand


A-Z listingplugin-autotooltip__plain plugin-autotooltip_bigA-Z listing

This is an alphabetical index of all content pages.


Other categories

Utilities

Contacts
Register

Also see

Importance Ratings
News
Legal
Donate/Sponsor


Wikenigma supports:


Feeds etc
rss / xml feed
sitemap file
A-Z listing (archived)

Wikenigma - an Encyclopaedia of Unknowns Wikenigma - an Encyclopaedia of the Unknown Science

Hypnic jerks

Hypnic jerks (a.k.a. Hypnagogic jerks, sleep starts, sleep twitches, myoclonic jerks, night starts etc) are brief and sudden involuntary muscle contractions (twitches) which happen as a person is beginning to fall asleep. They can be severe enough to wake the sleeper. Approximately 70% of people have experienced them.

They are benign, and occur randomly in healthy people.

Various factors are known to increase the likelihood of HJs - such as caffeine, nicotine, exercise, stress etc etc. The cause is unknown, and none of the several theories that have attempted to explain it has been fully accepted.

See Wikipedia

Note: Hypnic jerks are not thought to be linked with Restless leg syndromeplugin-autotooltip__plain plugin-autotooltip_bigRestless leg syndrome

Restless legs syndrome, also known as Willis-Ekbom disease, is a common condition of the nervous system that causes an overwhelming and irresistible urge to move the legs. Estimates are that around 10% of people suffer from RLS at some stage in th…


    Share this page :

X

Dear reader : Do you have any suggestions for the site's content?

Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.

If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !


Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.

( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)

Show another (random) page

DOKUWIKI IMPLEMENTATION DESIGN BY UNIV.ORG.UK JUNE 2021