Kendal Jenner suffers from sleep paralyisis

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In the latest episode of 'Keeping Up with the Kardashian's' Kendal reveals to Kim than she has been suffering from sleep paralysis.

After Kim admits to not know what it is, Kendal explains, "You're asleep and then in the middle of the night, basically your mind wakes up but your body is still asleep. So like you wake up but nothing can move, can't speak, nothing. I think the key is to be calm, but it's really difficult. It's so scary."