How important is hydration to my overall health?

Staying optimally hydrated is critical to get nutrients to your cells and wash away toxins. The next time you find yourself tired during the day, drink a glass of cold water and see how dramatically your energy picks up almost instantly. Over half of our body is made of water. So, it's not surprising that even mild dehydration can cause fatigue and poor concentration. A body even a half-quart low on water can make you noticeably tired.