Turns out kale is just as beneficial for your brain as it is for your ticker. In a 25-year Harvard study of more than 13,000 women, participants who ate high amounts of vegetables experienced less age-related decline in memory over the years, and leafy greens such as kale were among the most impressive. Try braising kale with a bit of olive oil, garlic, and 1/3 cup water or low-sodium broth for a delicious side dish with dinner, or bake off a batch of my crispy kale chips.