The last on the list is spinach. When the word spinach pops up, I always remember the cartoon series, Popeye. It has been so long since I have seen an episode but I can always distinctly remember that whenever Popeye would eat spinach, he would become strong. Although the logic is faulty, that show did help promote eating healthy food which does help the body become stronger.
Spinach contains several minerals and vitamins. If grapefruit is akin to a miracle fruit then spinach is like a miracle vegetable. It posseses vitamins C and K as well as iron, folic acid and antioxidants.
With the list being completed, I hope that I was able to expand your pre-existing knowledge.