As a general rule, you can use this simple calculation. Water (in litres) to drink a day = Your Weight (in Kg) multiplied by 0.033. For example, if you are 60 kg,60×0.33=1.98 litres.Dehydration means a condition that occurs when the body loses too much water and other fluids that it needs to work normally. Dehydration is usually caused by severe diarrhea and vomiting, but it may also be caused by not drinking enough water or other fluids, sweating too much, fever, urinating too much, or taking certain medicines.Symptoms or sings of dehydration include •Dizziness or light-headedness.•Headache.•Tiredness.•Dry mouth, lips and eyes.•Passing