Drink more water... Lovely lemon mint water from @Kelly Hunt
How To Make Homemade Vitamin Waters
Mary Poppins: Barley Water — "Upstairs in the Nursery, Jane and Michael watched at the window and wondered who would come. They were glad Katie Nanna had gone, for they had never liked her. She was old and fat and smelt of barley-water. Anything, they thought, would be better than Katie Nanna—if not much better."