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Some people are much better prepared to survive sudden exposure to very cold water due to body and mental characteristics and due to conditioning. [1] In fact, cold water swimming (also known as ice swimming or winter swimming) is a sport and an activity that reportedly can lead to several health benefits when done regularly. [4]
Sweating occurs when the ambient air temperature is above 35 °C (95 °F) [dubious – discuss] and the body fails to return to the normal internal temperature. [18] The evaporation of the sweat helps cool the blood beneath the skin. It is limited by the amount of water available in the body, which can cause dehydration. [5]
If the water is cold, relative to body temperature (30 °C or below), the endolymph falls within the semicircular canal, decreasing the rate of vestibular afferent firing. This situation mimics a head turn to the contralateral side. The eyes then turn toward the ipsilateral ear, with horizontal nystagmus to the contralateral ear. [5] [6]
An ectotherm (from the Greek ἐκτός (ektós) "outside" and θερμός (thermós) "heat"), more commonly referred to as a "cold-blooded animal", [1] is an animal in which internal physiological sources of heat, such as blood, are of relatively small or of quite negligible importance in controlling body temperature. [2]
Until the body temperature is raised to near-normal levels: Types: Primary hypothermia: caused by exposure to a cold environment; Secondary hypothermia: caused by an underlying pathology that prevents the body from generating enough core heat. Causes: Mainly exposure to cold weather and cold water immersion: Risk factors
Due to sweating and electrolyte loss during exercise, coconut water may be beneficial for rehydration after exercise; however, its sodium content is lower than that of a sports drink, so it may ...
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