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Heat Exhaustion Strikes Cast: Sean Penn Collapses on Set

12/26/2025

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Summary

Story summary

Alison Arngrim, the former Nellie Oleson, described filming in Simi Valley, California, as one of the hottest locations, where actors often fainted.
On The Patrick LabyorSheaux podcast, Alison Arngrim said Sean Penn, the actor, collapsed from heat exhaustion during filming directed by his father.
Buckets of ice water and salt tablets were provided on set to combat the heat.
The cast remained committed to the show.

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Story summary

Alison Arngrim, the former Nellie Oleson, described filming in Simi Valley, California, as one of the hottest locations, where actors often fainted.
On The Patrick LabyorSheaux podcast, Alison Arngrim said Sean Penn, the actor, collapsed from heat exhaustion during filming directed by his father.
Buckets of ice water and salt tablets were provided on set to combat the heat.
The cast remained committed to the show.