Water retention? Eat a banana...
Potassium helps regulate the body's water balance and a low potassium intake, (particularly when combined with too much dietary salt) means you retain excess water. Bananas are a great source of dietary potassium.

Potassium helps regulate the body's water balance and a low potassium intake, (particularly when combined with too much dietary salt) means you retain excess water. Bananas are a great source of dietary potassium.