Why am I here today? To inform ye (plural form of "you") of the benefits of various "superfoods" such as Dark Chocolate. Starting with dark chocolate, of course.
First of all, avoid milk chocolate at all costs. Milk chocolate is a very low-grade chocolate that contains far fewer benefits than dark chocolate, especially because the U.S. only requires 10% chocolate liqure to be added. Also, milk chocolate and certain types of dark chocolate are produced with Alkali, which greatly reduces the antioxidant capacity as compared to "raw" cocoa powder, and destroys most of the flavonoids.
I personally eat one square of 85% or 100% dark chocolate per day. Dark chocolate is NOT to be consumed in massive quantities like some other types of candy. Too much of a good thing can cause health problems, and especially in this case due to the potency. My favorite brand? Lindt. 100% stuff tends to be in the baking isle. Further reading: http://en.wikipedia.org/wiki/Chocolate
Next is Spinach, which (if liquified) provides almost the exact same amount of calcium without the difficult-to-digest compounds or sugars (milk contains one of the worst sugars for your teeth there is). I personally eat at least one can a week, and avoid milk entirely. Other than spinach, there is Broccoli, which is also high in calcium (I eat broccoli very often). There is also quite a lot of controversy regarding milk in general, and I found this post, which does a semi-decent job of detailing some supposed issues. Broccoli is definitely preferred for calcium content, because spinach is a bit harder to digest.
Then there is fish. Fish in general is good for ye, and far more beneficial compared to beef or pork (pork is BAD for ye). Deer meet is also another favorite. Personally, due to budget limitations, I tend to buy the cheap canned pink salmon. I limit my intake due to mercury content, but generally eat one can a week to supplement my diet. If there's a fish farm near ye, take advantage of it and buy fish from there (mercury free!). Essentially fish really is brainfood.
This is part of my ongoing diet. There are many supposed superfoods, but I find the majority of them (such as Corn) are...not exactly safe. One option is Kale, but it's not easy to buy. If ye don't care that your food tastes like old man ass (I don't), do try Kale.
Generally the idea is to list foods that have VERY high nutritional value, but also somewhat low or decent caloric value. Why? Intermittent fasting and calorie restriction increases your life span. Or not. Regardless, it helps, and so does calorie restriction.
EDIT: ALSO! Eat bones! Bone marrow especially. I actually chew on boiled bones (VERY boiled), and eat the bone marrow. It's extremely healthy in small amounts, and our ancestors pretty much did the same thing. Organ meats is another option, but it's fairly difficult to find organ meats.
Edit2: Furthermore, be sure to drink tea and a hell of a lot of water. I generally use a beer stein (0.5 liters) to drink out of, because most other glasses or cups are far too small for proper hydration. Over the course of a day I generally drink 1-2 liters, sometimes tea sometimes just water. Remember, this is over the course of an entire day and SLOWLY.