Native to Peru, Maca has traditionally been used to enhance fertility and sex drive.
In recent years, it has become a very popular supplement among bodybuilders and athletes, who use it to boost sports performance and energy.
In a study of endurance performance, it was found that a group of male cyclists improved the time it took them to finish a nearly 25-mile (40-km) bike ride after only 14 days of supplementing with Maca extract (22)