Kendall Jenner's sleep paralysis has her petrified of getting shut eye. The 20-year-model admits that she’s "freaking out" over the health condition in a clip from Sunday’s upcoming episode of Keeping Up With the Kardashians.

The teaser opens with Kris going over Kendall's busy travel schedule, which finds the catwalk queen spending a week in Paris, Milan, and London.

"I don't know if I'm going to be able to do that,” Kendall tells Kris. "I can't travel that much.

"I'm scared," she continues. "I’m like freaking out over this paralysis thing. I'm scared to fall asleep because it keeps happening to me. It's almost like my heart stops."

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Kris listens to Kendall's fears before gently reminding her that the schedule was booked months in advance.

"The nature of what you do for a living and your career is flying around the world," explains Kris. "You have designers that have already booked you and are counting on you to show up."

Kendall retorts by reminding her mom that health is more important than work. "I'm just telling you that I think that my health is a bigger deal," she says.

Kris goes on to detail how Kendall's paralysis has crippled her daughter’s ability to enjoy a stress-free flight.

"Kendall basically lives on an airplane," Kris explains. "The anxiety on an airplane and the sleep paralysis is a huge problem. Sometimes it’s been so bad that she's been paralyzed from getting on an airplane."

Things have gotten so scary for Kendall that Kris once flew from L.A. to London, just so her daughter wouldn't have to fly back home alone.

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While Kendall's busy schedule doesn't appear to be slowing down, she still finds time to let loose. Watch the video below to see her twerk on Katy Perry (dressed as Hillary Clinton) at Kate Hudson’s epic Halloween bash.

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