I'm a dietitian, personal trainer, and triathlon coach who loves Costco. Here are 11 of my favorite things to buy there.

I usually grab a two-pack of Dave's Killer Bread and keep one loaf in the refrigerator and the other in the freezer.

I'll pair a slice with eggs, use it for tuna sandwiches, or crumble it up to make breadcrumbs for my homemade chicken meatballs.

My Costco carries a couple of varieties, but the 21 whole grains and seeds loaf is my favorite. It provides protein, omega-3s, and fiber — the latter can help support gut health and regulate blood-sugar levels.

Tomatoes are rich in lycopene, an antioxidant that promotes heart health and may reduce the risk of certain cancers. They're also an excellent source of folate, vitamin C, and potassium, which can support immune health.

I roast a batch of tomatoes weekly to serve on top of proteins or mix in with other veggies.

Lean proteins that taste great are a must to support muscle repair and fuel our performance goals.

Chicken is lower in fat than red meat, and the glaze on the Amylu teriyaki-pineapple meatballs adds a touch of sweetness to the taste.

I love pairing them with rice and roasted veggies for a balanced, satisfying, and quick weeknight meal.

The blend of broccoli, carrots, cauliflower, red peppers, kale, onions, and zucchini in the Veggies Made Great superfood veggie cakes is rich in vitamins A, C, and K and folate.

I like to pair them with eggs at breakfast to add some veggies to the start of my day.

Beans are a staple in our house — as a side dish and sometimes as the main feature. They're an excellent source of plant-based protein and fiber.

I like to pair the Summer Fresh Tuscan bean salad from Costco with grilled barbecue chicken or add it to a wrap for a hearty meal.

Yogurt is a great source of probiotics, which support gut health. It's also an easy snack to throw together between practices.

I like to pick up a big tub of Fage's 0% milkfat yogurt at Costco and serve it with berries for some extra fiber.

Kirkland's three-berry blend with raspberries, blueberries, and blackberries is a nice frozen option. It's rich in antioxidants, which can promote immune health and help reduce inflammation.

I like to warm the berries and mix them and the juices with yogurt for a satisfying and sweet treat.

The frozen blend is also a great way to jazz up oatmeal or boost the nutrients in a smoothie.

We buy a lot of eggs from a local friend every week, but I also love to have a quick, portable option on hand for those busy mornings when I need to run out the door after my morning workout.

Kirkland's sous-vide egg bites fit the bill.

Eggs are a complete protein source, which means they contain all the essential amino acids our bodies need. I like that the egg bites can easily be tossed into a cooler bag and taken on the go.

Bobo's oat bites are a top pick for my husband. They're vegan, gluten-free, and dairy-free; plus, they contain pureed fruit and whole-grain oats, which are a great source of soluble fiber and may help lower cholesterol levels.

The oats provide a slow-release energy source, making the bites a good option for runners and anyone who needs sustained energy throughout the day.

Both the runner and collegiate swimmer in my house love the taste of the That's It mini fruit bars.

I love that they are 100% fruit with no added sugar or preservatives.

They're also individually packaged, so they're a great portable option for fueling a training session or curbing an afternoon sweet tooth.

I love whipping up protein balls as a quick fueling option before or after a training session, but the SimplyFuel ones are the next best thing to my homemade version.

They travel well, and the mix of healthy fats, protein, and fiber makes them a powerhouse snack option for energy and recovery.

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