CHICOPEE, Mass. (WWLP) - It's a condition that may be more common than you think, sleep paralysis.
Some studies show more than 50% of people have suffered from a bout of sleep paralysis.
It happens when someone becomes conscious while their muscles remain in a relaxed state that prevents them from moving.
Some people may even hallucinate during an episode.
Most of the time people will not need to seek medical attention unless the paralysis comes more frequently or begins to last longer.
"And even then it is usually not a serious condition; rarely is it associated with some more complicated sleep disorders like narcolepsy," according to Dr. Zubair Kareem, neurologist at Holyoke Medical Center.
Sleep paralysis has been linked to people with common disorders such as migraines, anxiety and narcolepsy.