Potassium

Lychee are also a good source of potassium, an electrolyte that helps to maintain fluid balance, contract muscles and control blood pressure. Potassium reduces blood pressure by relieving tension in the walls of your blood vessels and helping your body to excrete excess sodium, according to the American Heart Association. A cup of lychee fruit provides 325 of the 4,700 milligrams that your body needs daily.