Water is the most important macronutrient in the body. However, water cannot be used as a tool to deal with the body or replace the role of other nutrients. Excess or lack of water may harm the body. Replacing breakfast just by drinking water or drinking excessive water after waking up is not recommended. Morning drinking enough water 2-4 glasses (0.5 to 1 liter) to stimulate a bowel movement. Excess water actually push stomach contents up into the esophagus. Excessive water consumption will also make the heart work harder to pump blood. It can lead to heart failure, especially for those whose heart is weak.