No surprises here.
via Live Science:
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People who’ve experienced the strange phenomenon of sleep paralysis may feel like they can’t move their body when they’re falling asleep or waking up, or may have hallucinations that there’s a malevolent presence pressing down on them. Now, a new study suggests the phenomenon may have a heritable cause.
In the study, researchers asked a group of more than 800 twins and siblings whether they had experienced sleep paralysis. The results showed that genetics were partially to blame for the strange phenomenon.
In addition, the people in the study who had anxiety, slept poorly or had experienced stress in their lives were more likely to have these nighttime bouts of paralysis, the researchers found.
The findings shed some light on what is still quite a mysterious condition, the researchers said.