They can improve your mood
Sunflowers have a reputation for making people happy, and it's not just because of their cheerful appearance. Their seeds are loaded with magnesium, a mineral that may help alleviate depression, insomnia, headaches, and other life ruiners. Our ancestors got plenty of magnesium from fish, organ meats, and produce grown in mineral-rich soil, but today we have to make an extra effort to incorporate it into our diets. So if you A) like being happy, and B) think they call it "offal" for a reason, skip the sweetbreads and score some sunflower seeds instead.
They've probably saved the lives of countless baseball players
Back in the day, baseball players would often chew tobacco during games. Once the field of medicine advanced beyond doctors endorsing tobacco products, however, the habit's popularity declined, with many players switching to sunflower seeds around the 1950s. The sunny seeds have been a staple of the sport ever since, but you don't have to be a baseball fan to snack on sunflower seeds. Pretty much the only requirement is teeth.
There are a zillion ways to enjoy them -- and only one way they can fill you with regret
Sunflower seeds are inexpensive and readily available, and they make a great addition to lots of meals you already eat. Sprinkle them on a salad, bake them into bread, or grind them into "butter," but for the love of God, don't make a habit of eating the shells. The best-case scenario is constipation; the worst is a hole in the digestive tract. If you were that kid who was always swallowing his gum, you might want to play it safe and get the shell-free kernels.