6. Canned Tuna
![Image Credit: https://www.pinterest.com/pin/391391023838270425/](http://34.106.202.240/wp-content/uploads/2015/08/canned-tune.jpg)
Tuna is a great source of protein that you can get cheaply, especially the ones that are canned and marketed specifically for muscle builders. A five-ounce can of tuna contains 30 grams of protein; You can get canned tuna for less than $1 and enjoy the intake of the lean protein source that can make your body more toned and aesthetic.