Because water is absolutely critical to life. Without it, none of them would be able to function. If you're finding yourself stuck on a diet plateau, look at your water intake. If you haven't been drinking enough, this could be your problem. Beginning the proper water intake can yield amazing results.
Water has several vital functions in the body.
Dissolves vitamins, minerals, amino acids, glucose and other nutrients. Provides a medium for chemical reactions. Is involved in the production of energy. Acts as a shock absorber inside eyes, spinal cord and joints. Helps the body flush out waste materials.