Maca (Peruvian ginseng) is a root vegetable in the same plant family as turnips, radishes and broccoli. For centuries, it has been used as both food and medicine in South America. Incan warriors would consume maca before long journeys and battles to enhance their strength and endurance. Today, athletes are confirming what history has revealed about this incredible superfood. As an energy booster, maca is celebrated for providing stamina and mental clarity.