Raw kale can be coarse, so if you don't plan on cooking it before eating, you need to take some steps to tenderize it first. Massaging kale helps smooth out raw kale's roughness, making it the perfect crispness for a delicious salad -- or anything else you want to use it in!
My ultimate measure of a food is its power to support brain health, and it is clear that more kale in your diet means a happier, healthier, sexier you -- all the basic signs that your brain is running well.
If you're lucky enough to live in sunnier climes, you'll find plenty of local greens, including kale, at your market. And those of us in less-temperate zones can still enjoy this sort-of seasonal green all winter long.