Many teas have been shown to boost metabolism, block the creation of new fat cells, speed the release of fat from cells, and actually turn off fat genes due to their catechin levels, but green tea has a leg up on the competition. This magical elixir is particularly high in the antioxidant ECGC, the compound that burns fat and stops it from forming. Pair your tea with a workout for a fat-burning bonus. Exercisers who drank four to five cups of green tea daily and worked out for 25 minutes lost more belly fat than their non-tea-drinking counterparts, a study published in The Journal of Nutrition found.
Known as “forbidden rice” because only emperors were allowed to eat it, black rice may be the cheapest source of antioxidants around. According to the American Chemical Society, black rice has more antioxidants than a spoonful of blueberries, with more satiating fiber, more vitamin E, and less sugar. More antioxidants mean less inflammation, which means less fat storage for you.

Research suggests these magical pulses are one of the closest things we have to a fat-burning pill. For starters, beans are a great source of resistant starch, a type of slow-digesting, insoluble fiber that feeds the healthy bacteria in your gut, triggering the production of the chemical butyrate, which encourages the body to burn fat as fuel and reduces fat-causing inflammation. They’re also one of the top sources of soluble fiber. A recent study by Wake Forest Baptist Medical Center researchers found that for every additional 10 grams of soluble fiber eaten per day, a study subject’s belly fat was reduced by 3.7 percent over five years. Black beans? One cup boasts an impressive 4.8 grams of soluble fiber.
Although you do want to increase your walking over time, this doesn’t necessarily mean that you have to be working your way up to a more intensive form of cardio like swimming or running. “Moving on to new exercises is not something someone should feel they have to do unless their goals change and a new exercise is needed to support those goals,” says Gagliardi. “Walking alone can be progressed by changing the distance, speed, terrain, and by adding intervals.”
Use an adult energy needs calculator to estimate your calorie intake needs; then subtract the 500 to 1,000 calories for weight loss. For example, a 28-year-old woman who is 5 foot, 9-inches tall weighs 175 pounds and is lightly active -- less than an hour a day -- burns about 2,400 calories daily. She'll burn about 2 pounds of fat in a week if she eats 1,400 calories daily, or 1 pound a week if she eats 1,900 calories a day.
Whether you're headed to the beach, prepping for a special occasion or just want to jump-start a healthier lifestyle, you can set the foundation for belly fat loss in a week. And while you likely won't reach your final weight loss goals in a week -- unless you're only looking to lose a pound or two -- you might be able to see minor differences and burn some initial belly fat. However, the results from diet and exercise modifications can keep you motivated to stick to longer term goals, and they'll set you on a road to success -- without the high risk of weight regain associated with fad crash diets.
Citrus fruits contain the fat-burning nutrients fiber and vitamin C. Vitamin C stimulates your body's fat-burning capability found in the carnitine amino acid, according to Fat Free Kitchen. Vitamin C plays a role in your body's fat processing capability. This nutrient speeds the process up by diluting the fat and then eliminating it from your body. Eat a variety of fiber and vitamin C-rich citrus fruits to increase your metabolism and burn fat. Citrus fruits include grapefruit, guava, lemons, limes, oranges, tangerines, papaya and tomatoes. Drinking juices made from these fruits can also help burn fat.
This naturally sweet winter squash boasts one of the highest fiber counts of all the veggies, ringing in at a whopping 9 grams per cup. Promoting feelings of fullness—and thus staving off overeating so you can burn, rather than gain, fat—with satiating fiber isn’t the only way you’ll target that turkey neck. That’s because acorn squash is also an excellent source of vitamin C, a micronutrient that your body uses to decrease levels of the fat-storing hormone cortisol and boost the fat-burning effects of exercise, according to Arizona State University researchers.
This classic lunchbox sandwich condiment is teeming with flat-belly nutrients such as cholesterol-lowering monounsaturated fats and is a great source of plant-based protein. According to a recent study presented at the annual Society for Endocrinology conference, researchers found that when protein is digested and broken down into amino acids in your body, one of those amino acids—phenylalanine—triggers hormones that help reduce appetite and ultimately leads to fat burn and weight loss. Go for brands that have an ingredient list of just two items: nuts and a little salt, or look to our guide: Best and Worst Peanut Butters. 
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