Don’t let extra hours lounging in bed stand between you and a flatter stomach. While getting enough sleep can help boost your metabolic rate, sleeping in may undo any benefit you’d enjoy from catching a few extra winks. One Obesity study reveals that late sleepers who snoozed past 10:45 in the morning ate nearly 250 more calories over the course of the day, despite eating half as many fruits and vegetables as their early bird counterparts. Even worse, they chowed down on more salty, sugary, and trans-fat-laden fast food than those who woke up earlier. If you happen to head out of the house early, you’re in for an additional metabolic boost; researchers at Northwestern University have found that people exposed to just a short period of early morning sunlight had lower BMIs than their late-waking counterparts.
Some cheat meals are better than others. And a high-carbohydrate, moderate-protein meal, however “naughty,” can help you stay on track. The reason: Carbohydrates have the greatest influence on leptin levels, which help you burn fat and feel satisfied. And protein has the greatest influence on satiety because of its influence on appetite-regulating hormones and high thermic effect—the process of digesting protein requires more energy of your body than any other macronutrient. So, go ahead and grab a bowl of spaghetti and meatballs. Contrary to popular belief, pasta is actually a fairly low-glycemic food, meaning it won’t drastically spike your blood sugar levels.
Berries are packed with polyphenol antioxidants that will help burn fat—and prevent it from forming—as well as boost your workout benefits by improving blood flow to your muscles. According to a Texas Woman’s University study, mice that ate three daily servings of berries had 73 percent fewer fat cells. Pop some of the blue guys into your next smoothie and boost the fat-burning potential: blueberries are a potent source of resveratrol, an antioxidant which an International Journal of Obesity study showed could convert excess harmful white fat in mice into calorie-burning beige fat, which correlated with a 40 percent decreased risk for obesity. And when it comes to the sugar content in fruit, berries rank favorably on the list but are still a powerful way to curb cravings for sweets.
Exercise every day. A week is a short time, so commit to strenuous exercise to reach your goal. An hour of intense cardio will help you burn calories and sweat out some of your water. Just be sure to drink water to replace what comes out in the sweat or your body will be dehydrated. You'll also want to work on your ab muscles, which will help you stand taller and look slimmer. Do exercises that focus on each area of the abs -- upper, lower and obliques.
Apple cider vinegar, in particular, is composed mostly of acetic acid, which has been shown to delay gastric emptying and slow the release of sugar into the bloodstream. Research published in the journal Bioscience, Biotechnology, Biochemistry found that a small pool of study participants given ACV over a 12-week period lost more weight, body fat and inches from their middle than participants that were given a placebo. How does it work? Besides maintaining stable blood sugar levels, ACV produces proteins inside the body that burn fat.
Whole grains contain nutrients that burn fat by keeping your insulin levels low, according to the New York Daily News. Whole grains provide excellent sources of complex carbohydrates and fiber, both beneficial in stimulating your metabolism. This results in burning more fat and calories, according to Fat Free Kitchen. Whole grains include whole wheat, barley, brown rice, quinoa, spelt, kamut, wheat bran and wheat germ. Eating a bowl of oatmeal in the morning will both fill you up and start your day energized. A late night snack of a whole grain fruit-filled bar will help your body burn calories while sleeping.
It’s a dietary miracle: A fat that makes you skinny. Dietary supplementation of coconut oil actually reduced abdominal obesity in a study published in the journal Lipids. Of the participants, half were given two tablespoons of coconut oil daily and the other half were given soybean oil, and although both groups experienced overall weight loss, only the coconut oil group saw smaller waistlines. And other researchers have also pointed to the waist-whittling effects of the tropical oil. In a separate study of 30 men, those who ate 2 tablespoons of coconut oil a day shrank their waists by an average of 1.1 inches in one month. Thank C.O.’s medium-chain triglycerides, which are burned as energy instead of being stored as fat, and lauric acid, which has been shown to pinpoint belly fat and torch it.

All animal proteins are also a good source of tryptophan, which is a precursor to the neurotransmitter serotonin. “If you struggle with mood or stress, it’s important to boost the production of serotonin to stabilize your mood, curb emotional eating, and keep stress-induced snacking at bay," especially when you’re trying to lose weight, says Cording. But when it comes to portions, opt for a 100 gram serving, which is about the size of a deck of cards, for reference.
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.
“Starting slow and working your way up is better than overdoing it and giving up,” says Gagliardi. “I like the idea of attaching the new behavior of taking a walk to an existing behavior.” An easy way to approach it: Commit to going for a quick 10-minute walk after dinner, and slowly increase the time as you become more comfortable with daily movement.

Kickstart your morning—and your metabolism—with this warming spice. Cinnamon contains powerful antioxidants called polyphenols that are proven to alter body composition and improve insulin sensitivity (which means it keeps blood sugar stable, preventing hunger-inducing spikes and crashes). Japanese researchers found that mice who ate a daily helping of cinnamaldehyde (the ingredient that gives cinnamon its flavor) lost belly fat, while those who skipped the spice did not. Add it to your overnight oats or sprinkle some in your coffee to reap the benefits.
Though green tea is not caffeine rich, it does contain around 25 to 50 mg of caffeine in a cup. The green tea contains EGCG or epigallocatechin gallate. This boosts the metabolism. It also leads to powerful antioxidant properties supporting the norepinephrine in the brain sending signals to the body to break down fat cells and use fat which is on your body for energy. Consuming green tea along with exercise is the perfect way to burn your belly fat.
Each slice of grapefruit you add to your salad acts like a match to spark your body’s fat-burning ability. A study published in the journal Metabolism found that those who ate grapefruit for six weeks lost a full inch off their waistlines. What’s behind the belt-tightening effect? The fruit is rich in phytochemicals, bioactive compounds that recent research shows stimulate the production of a hormone called adiponectin, which is involved in the breakdown of body fat. Japanese research suggests the smell of the juicy fruit can “turn on” calorie-burning brown fat cells, promoting the breakdown of body fat while reducing appetite.
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