Protein is one of three nutrients along with carbohydrates and fat called macronutrients that supply the body with calories the consumption of protein and muscle building are complementary processes as protein is necessary for building tissuerthe protein meat box includesrrsirloin steaks 2 x 170g eachrsteak mince 2 x 454g eachrpork stir fry 2 x 454g eachrskinless chicken breast 4 x 170g eachrchicken thigh bonelessskinless 10 x 80g eachra cooking guideline leaflet x 1rrgrass fed bee