Sodium is an essential mineral required by the body. One of its functions is to help balance the levels of fluid in the body, which helps to maintain normal blood pressure and keep nerves and muscles working properly. Excessive intake of sodium may cause problems in some individuals. Sodium is the dietary element at the centre of the medical debate linking sodium intake with high blood pressure (hypertension). However, when exercising strenuously, particularly in hot weather, it is important to replace the salt and fluid lost through perspiration.
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