<p class="ingestion featured-caption">I love shopping for my family's groceries at Costco.Cassandra Padula Burke</p><ul class="summary-list"><li>As a <a target="_blank" class href="https://www.businessinsider.com/easy-dinners-for-mediterranean-diet-dietitian-recipes">registered dietitian</a>, personal trainer, and athlete, I buy foods to fuel performance.</li><li>Costco is a great place to buy both whole foods and <a target="_blank" class href="https://www.businessinsider.com/convenience-foods-keep-kitchen-make-healthy-eating-easy-2024-1">convenient snacks</a> for the month. </li></ul><p>As a dietitian, <a target="_blank" class href="https://www.businessinsider.com/healthy-habits-fit-throughout-life-personal-trainer-2024-7">personal trainer</a>, triathlon coach, and busy mom, I try to fuel my family with a variety of whole foods.</p><p>My husband is a distance runner, our daughter is a collegiate swimmer, and I'm <a target="_blank" class href="https://www.businessinsider.com/ironman-triathlon-cost-training-breakdown-money-spent-psychology-spending-worth-it-2023-6">training for a triathlon</a>, so proper nutrition is key. But like any family, we also eat plenty of convenience foods.</p><p>Costco is one of my favorite places to stock up on everything we need.</p><p>Along with our usual whole-food staples, I look for portable options that, ideally, contain only a few ingredients, meet our nutrition needs, and fuel our performance goals.</p><p>Here are some of my <a target="_blank" class href="https://www.businessinsider.com/costco-shoppers-share-the-best-things-to-buy-photos-list">favorite things to buy at Costco</a>.</p>