Pineapple is full of bromelain, an enzyme which aids digestion and eases bloating. Make yourself a fruit salad and add papaya which also helps you feel less bloated.
Fennel is a diuretic and can help your body flush out the excess water which often leaves you feeling bloated. If the liquorice-like taste puts you off then celery is a great alternative with similar properties.
Any kind of yogurt, whether full fat or fat-free, can help improve your digestion - as long as it's rich in probiotics. Just look out for live and active cultures on the container's label.
Fitness expert Tracy Anderson, writing for Health magazine, recommends dairy in general for helping achieve a flat stomach.
She says: "If you're after a sleeker middle, add dairy to your diet. Research shows that its proteins increase satiety and cause you to eat less. My choice: homemade Parmesan crisps. Preheat oven to 350; line a baking sheet with parchment. Divide 2 cups grated Parmesan into 2-Tbsp. portions. Form each into a small pile and press with the back of a fork. Bake until melted and flat, 5 to 10 minutes. Transfer to a paper towel-lined plate. Serve with chopped cooked vegetables (I love spinach, squash or eggplant)."
Ginger and peppermint
Ginger and peppermint are great for keeping gas at bay. Try hot or iced ginger or peppermint tea but keep it unsweetened to avoid unnecessary calories.