Thank you for your beneficial comments. I totally agree with you. When I said dehydrated, I meant in the full sense of the word, not 10% or 15% or 30%. Hence many have the misconception that one is dehydrated (extremely) when they are thirsty, which is not the case (clearly denoted in your comment that it is a sign of 10-15% dehydration).

Thanks again for your comments.

Well, I have read and listened to a number of documentaries generally in the field of survival training which all indicate that thirst is a bad indicator of a bodies water hydration. In general, when one begins to feel thirsty while walking through dry desert conditions or infact stuck on a lifeboat in the middle of an ocean the general rule of thumb is to keep as hydrated as possible so that your faculties involved in decision making are not impaired. They say when you begin to feel thirsty you are generally 10-15% dehydrated.

In fact there is research on how ageing reduces our “sensation” of thirst, the older you get the less thirsty you feel in a fixed time and environment. So, I am not sure if that Myth of thirst being a bad indicator of dehydration really is a myth. True, too much water can be dangerous but I think it is more of a norm for the average person to generally drink less water than they should be. I doubt I would be wrong in saying that many many more people die each year from dehydration as opposed to water poisoning (excessive water consumption in a short period of time).

Just my two pence worth….