Nuts and seeds were a big part of the original caveman diet; they should be a big part of your program as well.???Almonds: An ounce of almonds contains 6 grams of protein and 3 grams of fiber.???Brazil nuts: One of the best sources of cancer-fighting mineral selenium.???Macadamia nuts: These nuts are one of our favorite snacks, with 80% heart-healthy monounsaturated fat.???Pecans: These nuts are l