Spinach | Fight Fatigue | Caring.com: "Not only is spinach one of the most iron-dense food sources on earth, it's also extremely rich in magnesium and potassium and is an excellent source of energy-supporting B-vitamins.
Why it works: Iron plays a direct and important role in fighting fatigue. It's a known energy booster, helping the body produce energy by delivering oxygen to the cells and enabling them to perform optimally. Without sufficient oxygen, our cells slow down and can even shut down altogether. Low iron levels can cause both physical and mental fatigue, as well as anemia. Symptoms of anemia include tiredness, lack of energy, weakness, trouble concentrating, apathy, insomnia, and loss of appetite. Spinach and other leafy greens offer a high rate of iron for an extremely low caloric intake. Spinach also happens to be an excellent source of vitamin C, which boosts iron absorption. Magnesium is another mineral that plays a vital role in the production of energy. In fact, it's involved in hundreds of enzymatic reactions throughout the body and directly affects our cardiovascular, digestive, and nervous systems; muscles; kidneys; liver; and brain."
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