When you have a fever, drinking plenty of liquid is very important to prevent the body from shivering and feeling the effects of inflammation. The electrolyte content in coconut water is useful for hydrating the body, so it will be beneficial for people who lack electrolytes due to prolonged high fever or excessive dehydration. Coconut water can provide additional intake of vitamin C, magnesium, manganese, potassium, calcium, with low calories. Drink a glass of coconut water without added sugar to make it healthier.