Because I know exactly what I want to buy, I can be in and out of Costco in under 10 minutes.Jessica TzikasI make 10-minute weekly Costco runs for protein-heavy, nutritious items for my family of four.The Just Bare breaded-chicken-breast chunks are a great Chick-fil-A dupe.My kids' favorite is the Polly-O string cheese, which is also a sneaky source of protein.My husband and I have always been Costco shoppers, but after having our two girls, our once-a-month Costco runs turned into once-a-week trips.With a 3-year-old and a 5-year-old who can empty a strawberry container in no time, we've learned that Costco was our best option for keeping our groceries within a reasonable budget.Costco has also been ideal in meeting two of our most important dietary requirements: protein-heavy items for my husband and me and dye-free, nutritious items for the kids.After shopping at the retailer every week for years, I've learned which products are ideal for our lifestyle.