No, that's also a myth: https://mobile.nytimes.com/blogs/well/2016/05/09/dehydration-risks-and-myths/?referer= https://mobile.nytimes.com/blogs/well/2016/05/09

No, that's also a myth: https://mobile.nytimes.com/blogs/well/2016/05/09/dehydration-risks-and-myths/?referer= https://mobile.nytimes.com/blogs/well/2016/05/09/dehydration... In most cases, thirst is a reliable signal that more water is needed.