KALE vs SPINACH...

The winner: Kale 

Kale's nutritional might would win over even Popeye. Gram for gram, kale contains four times more vitamin C, and one and a half times the amount of immune boosting vitamin A and vitamin K.  Vitamin K ensures that blood clots properly, but it's also needed to make a bone protein essential for strong, healthy bones.  Kale contains three times more lutein and zeaxanthin, antioxidants deposited in the retina that work together to protect eye health. 

I also love spinach, but I do prefer the kale because spinach makes my teeth squeak!