Adults in the U.S. are encouraged to get 10% to 35% of their day's calories from protein foods. That's about 46 grams of protein for women, and 56 grams of protein for men. It's not hard to get this amount if you eat two to three servings of protein-rich foods a day, according to the CDC.1  A small 3-ounce piece of meat has about 21 grams of protein.2  A typical 8-ounce piece of meat could have over 50 grams of protein.t's not hard to get this amount if you eat two to three servings of protein-rich foods a day, according to the CDC. 1  A small 3-ounce piece of meat has about 21 grams of protein. 2  A typical 8-ounce piece of meat could have over 50 grams of protein.