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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.
Techniques for extending hypnagogia range from informal (e.g. the subject holds up one of their arms as they go to sleep, to be awakened when it falls), [48] to the use of biofeedback devices to induce a "theta" state – produced naturally the most when we are dreaming – characterized by relaxation and theta EEG activity.
Due to the difficulty in collecting ejaculate produced during nocturnal emissions, relatively few studies have examined its composition. [4] [5]In the largest study, which included nocturnal emission samples from 10 men with idiopathic anejaculation, the semen concentration was equivalent to samples obtained from the same men by penile vibratory stimulation, although the proportions of sperm ...
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The first version of this article was adapted from the public domain NINDS Myoclonus Information Page Archived 2008-12-03 at the Wayback Machine. "Why do we twitch while falling asleep?" (The Straight Dope) Myoclonus Fact Sheet Archived 2016-12-03 at the Wayback Machine, National Institute of Neurological Disorders and Stroke (viewed 5 Apr 2005)
REM sleep is when many dreams occur, and if you get a full night’s sleep, you should have entered REM sleep multiple times throughout the night. “The final period of REM sleep and dreams ...
“Encourage activities and exposure to natural light during the day to support healthy sleep-wake cycles.” It's also crucial to try to avoid overstimulation in the evenings by limiting loud ...
From ancient history to the modern day, the clitoris has been discredited, dismissed and deleted -- and women's pleasure has often been left out of the conversation entirely. Now, an underground art movement led by artist Sophia Wallace is emerging across the globe to challenge the lies, question the myths and rewrite the rules around sex and the female body.