Editing Shivering (section)

{{short description|Bodily function in response to cold and extreme fear}}
{{redirect|Shiver}}
{{more citations needed|date=September 2022}}
[[File:Winter's coming (5268496779).jpg|thumb|A woman shivering from cold]]
'''Shivering''' (also called '''shuddering''') is a bodily function in response to cold and extreme [[fear]] in [[warm-blooded]] animals.<ref name=":0">{{Cite journal |last=Hemingway |first=Allan |date=July 1963 |title=Shivering |url=https://journals.physiology.org/doi/abs/10.1152/physrev.1963.43.3.397?journalCode=physrev |journal=Physiological Reviews |volume=43 |issue=3 |pages=397–422 |doi=10.1152/physrev.1963.43.3.397 |issn=0031-9333|url-access=subscription }}</ref> When the core [[body temperature]] drops, the shivering [[reflex]] is triggered to maintain [[homeostasis]].<ref name=":0" /> Skeletal muscles begin to shake in small movements, creating warmth by expending [[energy]]. Shivering can also be a response to [[fever]], as a person may feel cold.<ref>{{Cite journal |last=Holtzclaw |first=Barbara J. |date=1993-01-01 |title=The Shivering Response |url=https://connect.springerpub.com/content/sgrarnr/11/1/31 |journal=Annual Review of Nursing Research |language=en |volume=11 |issue=1 |pages=31–55 |doi=10.1891/0739-6686.11.1.31 |issn=0739-6686|url-access=subscription }}</ref> During fever, the hypothalamic set point for temperature is raised.<ref name=":2">{{Citation |last=Balli |first=Swetha |title=Physiology, Fever |date=2025 |work=StatPearls |url=https://www.ncbi.nlm.nih.gov/books/NBK562334/ |access-date=2025-04-03 |place=Treasure Island (FL) |publisher=StatPearls Publishing |pmid=32966005 |last2=Shumway |first2=Karlie R. |last3=Sharan |first3=Shweta}}</ref> The increased set point causes the body temperature to rise ([[pyrexia]]), but also makes a person feel cold until the new set point is reached.<ref name=":2" />