Alison Arngrim revealed she passed out on her first day filming "Little House on the Prairie" in Simi Valley, and Sean Penn also fainted on set.
https://www.foxnews.com/entertainment/little-house-prairie-star-says-brutal-filming-conditions-left-cast-members-unconscious
https://www.foxnews.com/entertainment/little-house-prairie-star-says-brutal-filming-conditions-left-cast-members-unconscious