Arugula

Arugula, also known as rocket, colewort, roquette, rucola, and rucoli, is a leafy green in the Brassicaceae family. It has a slightly peppery flavor and small leaves that can be easily added to salads or used as a garnish. It can also be used for cosmetic and medicinal purposes.

It, like other leafy greens, is high in nutrients like pro-vitamin A carotenoids and vitamins B9 and K. It's also one of the best sources of dietary nitrates, a compound that your body converts to nitric oxide. Though the benefits of nitrates are debatable, some studies have found that by widening your blood vessels, they may help increase blood flow and lower blood pressure.