Cold water immersion has been praised for its health benefits since historical times, but scientific backing regarding its effect on immunity is nuanced. While exposure to cold water triggers a physical response that makes individuals feel invigorated, it does not guarantee improved immune function or lower likelihood of illness. Studies emphasizing the effects of cold exposure often show increased immune cell activity, yet do not consistently correlate with decreased infection rates. Additionally, healthier lifestyle choices of regular cold plungers may play a more substantial role in their reported wellness.
While cold water immersion does activate the body, that's not the same as strengthening the immune system. The cold shock response happens but doesn’t ensure better immunity.
Many studies into the effects of cold water focus on immune cell activity in the blood which can increase after cold exposure, but that doesn't necessarily lead to fewer infections.
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