When you have been sweating, and you need to get some electrolytes back into your system, what foods do you enjoy? The key is usually picking something that can give you back small amounts of salt and potassium- replenishing your body's supplies so your metabolism can continue to hum along smoothly in the warm weather. A slice of watermelon with a dash of sea salt has a lovely balance of potassium and trace minerals that really hits the spot nutritionally. Served fresh out of the refrigerator, watermelon can cool you off and top up your electrolyte stores. Yum!