TIL Deaf people are known to use sign language in their sleep while they are dreaming.
https://www.sciencefocus.com/science/do-deaf-people-do-sign-language-in-their-sleep
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1r55lqw/til_deaf_people_are_known_to_use_sign_language_in/