We're constantly hearing 'two litres a day'.09:38, 11 Jul 2026The recent spell of hot weather has left many Britons experiencing dizziness, faintness and fatigue. During such extreme conditions, maintaining proper hydration is crucial. For years, the guidance to consume two litres of water daily has been broadly regarded as fundamental to maintaining good health.‌The NHS advises drinking six to eight cups or glasses of fluid each day to support your body's wellbeing. "Water, lower-fat milk and sugar-free drinks, including tea and coffee, all count as part of your daily intake," the national health body states.‌However, a medical professional has recently used social media to challenge the notion that everyone requires two litres of water daily.‌Nutritionist Dr Federica Amati posted on Inst