There are simple indicators that can tell you how hydrated you are. 1) When did you last urinate, and was it a light or deep colour? 2) Can you make saliva ea

There are simple indicators that can tell you how hydrated you are. 1) When did you last urinate, and was it a light or deep colour? 2) Can you make saliva easily in your mouth, or does your tongue rasp around? That and "Have I had any water yet this morning / afternoon" keeps me hydrated.