Here’s how they match up nutritionally against each other:
Nevertheless, kale has a very high vitamin K content, despite not shown above.
So which of these green leafy vegetables should you eat? Each has its benefits. Perhaps let your tastebuds guide you. Just be sure to regularly include both green leafy veggies plus a variety of other different coloured vegetables in your diet to promote optimum health.
As for Popeye and his spinach eating ways, it is a misnomer that spinach can make your biceps bulge. It doesn’t contain any protein, after all. But even so, all that spinach probably kept Popeye in pretty good condition to fight the bad guys. As he always maintained: “I'm strong to the finish, 'cause I eats me Spinach, I'm Popeye the sailor man!” I, for one, am more than willing to take Popeye at his word. Despite being a fictional cartoon character, his biceps are still bigger than mine.