Rare sleep disorder that causes violent kicking and punching tied to smoking


(CBS News) A rare sleep disorder in which people violently kick, punch or thrash in their sleep may be more common in smokers and people heavily exposed to pesticides, new research suggests.
The sleep-kicking disorder is actually called “REM sleep behavior disorder.” According to WebMD, people typically lose muscle tone (paralysis) during the rapid eye movement (REM) stage of sleep - but that doesn’t occur in people with the disorder, causing them movements (sometimes violent) that can seriously harm the individual or their sleep partner. It is estimated to affect only 0.5 percent of adults.
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