Tuna is a lean, mean, omega-3-packed fish machine. To get some in your diet, join Chef Nino when he makes it the star of his “Cooped Up and Cooking” recipe, Pan-Seared Tuna Filets with Roasted Garlic Herbed Aioli! And yes, while tuna is definitely delicious, it’s also great for your heart thanks to its low sodium and omega-3 fatty acids.