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Is your house haunted? The science behind sleep paralysis

Have you ever woken in the middle of the night, certain there’s someone standing at the end of your bed, but found yourself unable to move or call for help? Perhaps you’ve sensed a dark figure in the corner of your room, felt pressure on your chest, or heard strange noises that seem to come from nowhere. It might sound like the plot of a classic ghost story. But there’s a scientific explanation for these frightening experiences - sleep paralysis. With Halloween approaching, we explore what happens during sleep paralysis, why some people see or sense a presence in their bedroom, and what you can do to reduce the chances of it happening again.