This leafy green is packed with magnesium, a nutrient essential for the biochemical reactions in the brain that boost your energy levels. According to Dr. Ramsey, some of the first studies on magnesium involved its effect on depression. That could come in handy today, since the majority of Americans simply don't get enough magnesium in their diet.
Green-thumb tip: Swiss chard is easy to grow in a home garden. If you plant it, harvest just a few outer leaves—not everything all at once—and the plant will continue producing all season long.
Read More: Grow Brain-Boosting Swiss Chard in Your Yard