Your body can retain water when your sodium and potassium levels are out of whack, Bannan says. In addition to keeping sodium in check, consume potassium-rich foods to maintain the balance and de-puff your belly. Try incorporating 1 medium baked potato without skin (610mg), 1/2 cup white beans (595mg), 1 cup cooked spinach (839mg), 10 dates (466mg), or 1 cup edamame (676mg) daily.
Here at Nerd Fitness, we’re a fan of the idea behind the Paleo Diet (we’re more “Paleo-ish” though), as it covers the list we just outlined above and gives you a simple, if strict, framework to follow. Even if you don’t follow things to the letter, a Paleo-ish diet – and the countless resources that have sprung up for it – are a great starting point for many people.
Cutting the amount of sugar you eat is one of the quickest and easiest ways to flatten your belly, especially if you replace that unhealthy added sugar with more fiber. In a review of 68 clinical trials and studies, New Zealand researchers reported in the British Medical Journal that increasing sugar intake meant increasing body weight while reducing sugar meant reducing body weight. Similarly, increasing fiber is another way to keep your belly lean. In a study of 1,114 people over five years, researchers reported that for every 10 grams of soluble fiber people ate, their belly fat accumulation was reduced by nearly 4 percent—even if they did nothing else to lose weight. Eat more soluble fiber with these 50 Overnight Oats Recipes for Weight Loss!
Sure, trampolines are built for kids, but as an adult using one for rebounding is a great way to flatten your tummy. “Not only is it a great cardio workout (which is the first step to tightening up your midsection) but it makes your core work like crazy so you are getting the cardio plus the toning,” explains Hope Pedraza, a Certified Personal Trainer through American College of Sports Medicine “Everything you need for a tight tummy!” To get a comprehensive workout using a mini trampoline, Hope suggests jumping, lifting your knees up high, twisting, adding some light weights to move around while you’re jumping, and moving in all directions in different planes.
Want a flatter stomach? Look in your glass—milk and soda are two major causes of tummy inflation. Approximately 65 percent of the human population has a reduced ability to digest lactose after infancy, which means that your glass of warm milk before bed may be the reason you wake up with too-tight pajamas. And when it comes to soda, both regular and diet are belly busters both from the sweeteners used and the carbonation. Try eliminating these from your diet and see if it helps flatten your tummy.
Lunch: Easy Burritos. Making a simple burrito is a great way to have a simple healthy lunch filled with protein and fiber. All you need to do is fill a whole grain tortilla with beans, spinach leafs, and a small amount of cheese and heat in the microwave. Garnish with as much salsa as you like, but be sure to check that your salsa choice has no added sugars.
For your dinner tonight—as well as for lunch and dinner for the next couple days—you’ll be making a super simple roasted chicken breast with roasted veggies and quinoa. Chicken is a versatile, lean protein that’s rich in selenium—a mineral that keeps your skin glowing and your metabolism running properly. Quinoa is an ancient grain that’s touted for its micronutrients, anti-inflammatory phytonutrients, and antioxidants, like fat-burning quercetin. And, of course, we’re getting in a rainbow of veggies to reap the unique properties of each.

Researchers say it has to do with the flavonoids, the heart-healthy compounds in chocolate, that have important antioxidant and anti-inflammatory properties. Just be sure you’re reaching for a bar with at least 70 percent cacao, and stay away from the “alkalized” stuff, which has a significantly reduced flavonoid content. We like Nibmor Extreme Dark Chocolate with Cacao Nibs.

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).

As this video from the PictureFit YouTube channel explains, the only guaranteed way to get a flat stomach is through—brace yourself—diet and exercise. To be more precise, you need to use up the fat you have stored around your abs. But because spot reducing is a myth, you’ll have to focus on reducing the fat throughout your entire body. To do that, you’ll need to burn more calories than you put in every day, but it’s more complicated than “eat less, move more.” You need to eat fewer carbs while increasing your lean protein intake. Why? Your body will try to burn carbs for energy first, but if you haven’t ingested many carb-heavy foods, your body will target fat for energy instead. Plus, protein makes you feel full longer. You also need to incorporate resistance training in your workouts to keep yourself from losing muscle mass in addition to fat (more muscle means burning more calories naturally). Low intensity cardio training can help with burning more calories each day, but it won’t help you retain muscle, so make sure it’s not the only thing you do.
In this book, we look at all of the ways you can improve your own gut health, starting with the food you eat. My diet recommendations, meal plans, and recipes will help feed and protect your gut microbes. And we look at the many other steps you can take to support your beneficial bacteria, from avoiding unnecessary antibiotics to changing the way you think about dirt and germs. Even the choices you make about how you bring your children into the world can have an impact on your family's microbiomes.
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