HYDRATION is your body's ability to absorb and utilize WATER in the tissues down to the cellular level and is a major issue in managing our wellness. Tissue under stress from injury, load, or lack of movement dehydrates.
The organic crystalline structures in our bodies have the capacity to generate and conduct electrical fields. The more hydrated the tissue the better it performs its electrical duties. These duties include the ionic bonding, transfer of nutrients, and wastes, and the conducting of neural transmissions. “A 10% change in water content can trigger a million fold change in charge transport along a protein.” 
Hydrate for Life!
A major reason for poor HYDRATION as we get older is the gradual decline of the thirst mechanism in the brain.
"Good HYDRATION during the early stages of life should reduce visible aging, which occurs when the largest organ in the body (the skin) becomes regularly dehydrated."
Your body and its cells need WATER to function. It is the basis of the fluids, which bathe the cells and tissues of your body.
Your most basic nutritional task is WATER balance.
Correct fluid balance influences:
But it is not how much WATER one drinks that determines how fluids are balanced throughout the body. It is the concentration and distribution of these fluids (and the nutrients they hold) that determine internal shifts and balances in your body WATER.
Some functions of WATER in the body that are essential to life are:
The American newsletter, “Health Alert” reported recently, "when it comes to diseases like heart, kidney or stomach disease, allergies, asthma, arthritis and skin diseases, your state of HYDRATION (WATER balance) may be the single most important factor in your recovery or even your survival".
 Energy Medicine in Therapeutics and Human
Performance by Dr. James Oschman (page 74)