Body loses 2.5 liters of body fluid per day.

Even on a quiet day, people lose about 2.5 litres of body fluid each day, while on an active day people can lose much more. It is important to replace the lost fluids to keep a balance between fluid intake and fluid loss.

What will happen if we lose our body fluid?

Humans cannot survive without body fluid. If the body loses just 3% (about 900ml in case of 60kg adult) of its fluid, dehydration symptoms such as fatigue will occur. With a 4-5% fluid loss, humans experience headache and dizziness. It can be fatal if more than 10% of body fluid is lost.