This K element also happens to be good for you. What is it?

Answer Potassium

Potassium is one of the electrolytes your muscles need to work optimally. When you don't have enough in your body, your muscles start to feel tired and weak. Bananas, avocados, leafy greens and lima beans are all good sources of potassium.

Asked by · Last updated 5 years ago · 5.9K views · SOURCE