Learn tips and tricks from CrossFitter and chef Nick Massie as he hunts for groceries at his local Whole Foods. On today's list are ingredients Massie needs for the Paleo Diet-inspired dishes he is preparing in this cooking series. As he wanders the produce section, Massie explains how he finds the freshest fruits and vegetables. For instance, he suggests buying loose mushrooms instead of packaged ones so they last longer. Look for firmness in carrots and peppers but a little give in avocados and limes, he says. Through careful observation, touch and smell, Massie can find the best his store has to offer. "Ideally, with any fruit or vegetable, you want it to be where you're not afraid to like take a bite out of it right now," he says. But washing is also important—even when buying organic. "Always rinse your veggies before you eat them, especially if you're not cooking them," he says. After he piles up the produce, Massie targets some mid-aisle items like nuts, coconut milk, sauces and spices. Then he heads to the fish and meat sections to round out a shopping trip that will provide him with two weeks' worth of meals.