Good old H2O – we need it to survive, but researchers at Manhattan College in New York found that water can also ease pain from injuries. When body tissue is damaged, it produces a chemical compound called histamine, which causes pain. Water dilutes the amounts of histamine in the blood, thus effectively reducing the level of pain.Water is also essential for the health of the cartilage tissue between our bones, as well as lubricating our joints and the soft tissue in our spine. A well-hydrated body is a well-lubricated machine, which prevents joint pains. Doctors recommend drinking 8 cups of water per day.