Sardines

You may be surprised to find out that ounce-for-ounce, sardines contain just as much heart-healthy omega-3 fat as salmon. Not to mention that they’re extremely low in contaminants, eco-friendly (so no need to worry about overfishing), packed with high-quality protein, and super affordable. If you buy canned sardines with the bones you’ll get a hefty dose of calcium, too.