Introduction Water is a very vital component in the human body. The human body can stay for weeks without food but can only manage a few days without water. 58-78% of human bodies are composed of water, depending on the body size. In a single day, the body requires about two to three liters of water. Approximately, 20% of this water is obtained from food, which means that the remaining amount needs to be drank directly (Guyton, 1991, p. 274). Nonetheless, this should not be the fixed rule for all people since various activities, professions and environments demand varied levels of body fluids. For instance, professional athletes more often than not do require more than the 2-3 liters a day while people in hot places require a higher water intake than those in cooler places. This fluid is so vital in our bodies because virtually each body process needs it. Thirst is a very good pointer that one’s body is getting dehydrated and thus should not be ignored. Functions of water in the body Water is responsible for the general well-being of the human body; sixty percent of the body is basically water. The roles of this fluid in the body are mainly four: various forms of movement around the body, protection of various body organs, lubrication and body temperature regulation in order to fit to prevailing conditions (Jackson, 1985, p. 240). Digestion cannot take place effectively minus sufficient water. The fluid keeps the body hydrated while at the same time it assists digestion especially in the intestinal tract. Food is enabled to flow freely through the system if it is contains adequate amounts of water. Absorption of vital nutrients in the intestinal tract also relies on the wetness of the digested food passing through. Effective ridding our bodies of wastes and other toxic substances also relies on the amount of water intake. Processes in the urinary tract, sweating and in getting rid of fecal matter rely on water (Koeppen, 2002, p. 108). It has been proved that people suffering from kidney stones need to up their water intake in order to liquefy calcium in their urine thus reduce stone formation. Sufficient water also prevents urinary tract infections by cleaning out impurities. Persons who don’t take enough water daily experience problems of constipation every now and then. Various organs in the human body need protection for general comfort and wellbeing. Water plays a vital role in protecting eyes from shocks and dirt, protecting cells, protection of joints against compression through the synovial fluid, protection of fetuses within expectant women and protection of our mouths from choking (Koeppen, 2002, p. 108). Organs in the body require sufficient lubrication for effective functionality and comfort. Our eyes and joints and mouths need constant lubrication, in which water is the major component. Several forms of transportation need to be carried out within a normal and functional body. Water present in the blood is the transporter of oxygen and foods to all our body cells. Water also returns waste products such as carbon dioxide to the lungs and urine to the kidneys for excretions. Temperature regulation is important for our bodies and it takes place with the help of water (Guyton, 1976, p. 424). In hot condition