Kendall Jenner's Fear: What Is Sleep Paralysis?

Model and reality-TV star Kendall Jenner recently revealed that she's afraid to go to sleep because of a condition called sleep paralysis. "I wake up in the middle of the night, and I can't move," Jenner said on the Nov. 6 episode of "Keeping Up with the Kardashians" on E!. "I looked it up online, and it's a weird thing called sleep paralysis," she said.