Turkey—the white meat, that is—is the leanest animal protein source you’ll find. (Dark meat from turkey is fattier, but not by much, with a 3.5-ounce serving containing only 1.5 grams of fat more than white meat.) Turkey can be used interchangeably with chicken in many dishes when you need a change of pace. While turkey is known for making you sleepy due to its supposedly high levels of the amino acid tryptophan, turkey actually doesn’t contain that much more tryptophan than chicken. Low-sodium, extra-lean turkey deli meat is an ideal choice if you’re often on the move and require a high-quality, ready-to-eat protein source.