#3 – Beans :
Canned beans are cheap, but dried beans are cheaper. Each cup contains about 15 grams of protein but just 220 calories.(Just combine beans with grains or other plant foods to complement the amino acids for maximum muscle building ) recommends Sonya Angelone, MS, RDN, an Academy of Nutrition and Dietetics spokesperson. The one-two punch will guarantee your body gets all the amino acids it needs to help your muscle growth.
15 oz can of beans: $1.24.