During normal labour, allowing clear fluids and a light diet as tolerated helps maintain maternal hydration and energy without increasing the risk of aspiration or gastrointestinal complications. Restricting fluids is unnecessary and may lead to dehydration, which can reduce uteroplacental perfusion and increase the risk of fetal distress. Oral intake of clear fluids supports maternal comfort and endurance during labour, whereas intravenous fluids should be reserved for when oral intake is contraindicated or insufficient. High-protein diets are not indicated during labour due to digestion demands.

Maintaining adequate hydration with clear fluids optimizes maternal and fetal well-being.

Reference: Williams Obstetrics, Cunningham F.G. et al., 25th Edition.