Most Americans need to decrease salt in their diet to avoid the potential side effects of excess sodium, so drinking salt water in the morning -- or at any other time -- is generally not recommended. Although your body needs sodium for vital functions such as muscle and nerve activity, the Centers for Disease Control and Prevention reports that consuming too much can lead to high blood pressure, potentially contributing to cardiovascular disease.
The average American does not need to drink salt water to consume adequate sodium; on the contrary, the typical diet already contains more than 3,400 milligrams of sodium while the recommended daily limit is just 2,300 milligrams. Sometimes, endurance athletes who sweat excessively may need sodium replenishment from beverages such as sports drinks. In these cases, Colorado State University Extension suggests that you make a beverage with about one-third of a teaspoon of salt per quart of water, along with 6 tablespoons of sugar. However, check with a medical professional before you concoct your own salty beverage.