9. Chronic Thirst
There is no clearer sign that you body needs water than a constant thirst. If you are thirsty during most of the day, or if your mouth is always dry, you need to drink more water. Most thirst is not quenched by soft drinks, coffee or alcohol. Anything other than water typically provides a temporary relief to thirst. The next time that you are thirst, make the logical choice and drink a glass of water. In the majority of cases you will notice your thirst subside. Water gives you the best hydration possible and is thus the only way to keep yourself well hydrated.