Though we singled out quinoa above, whole grains in general (we’re talking cereal, rice, pasta, and more) are conducive to weight loss, especially when they’re used in place of refined—white—grains. In fact, a study published in the American Journal of Clinical Nutrition found that substituting whole grains for refined grains in the diet increases calorie loss by reducing calories retained during digestion and speeding up metabolism. Unlike refined grains, whole grains are packed with satiating, heart-healthy fiber.
On top of its 4 grams of belly-filling fiber, a cup of hearty oatmeal delivers as much protein as an egg. In other words, the popular breakfast food is an excellent weight loss tool. In fact, according to a study in the Annals of Nutrition and Metabolism, scientists found that having oatmeal for breakfast resulted in greater fullness, lower hunger ratings, and fewer calories eaten at the next meal compared with a serving of ready-to-eat sugared corn flakes, even though the calorie counts of the two breakfasts were identical. For ways to get more fiber, sprinkle some berries and chia seeds on top of your oatmeal, but be sure to stay away from fattening syrup and sugar.
The next time you’re making a salad, why not throw some watercress in there? The green veggie is an excellent source of folate, which has been shown to stimulate weight loss. In fact, a study in the British Journal of Nutrition found that those with the highest folate levels lose about 8.5 times more weight when dieting than those with the lowest levels of folate. What’s more? A separate study in the British Journal of Cancer found that higher dietary folate intake reduces breast cancer risk. In addition to watercress, other good sources of folate include spinach, asparagus, and papaya.
According to Northwestern researchers, late sleepers—defined as those who wake up around 10:45 a.m.—consume 248 more calories during the day, as well as half as many fruits and vegetables and twice the amount fast food than those who set their alarm earlier. If these findings sound troubling to you night owls, try setting your alarm clock 15 minutes earlier each day until you’re getting out of bed at a more reasonable hour.
If you find yourself craving something sweet during the day, ignore the impulse to eat a cookie and snack on a stone fruit instead. In addition to being more nutritious than a cookie, some stone fruits—plums, peaches, and nectarines—have been shown to help ward off weight gain. Studies by Texas AgriLife Research suggest the aforementioned fruits may help prevent metabolic syndrome, a fancy name for the combination of belly fat, high cholesterol, and insulin resistance.
Although adding an exercise routine to your diet overhaul will help you burn fat more quickly than a dietary intervention alone, one JAMA study found that obese patients who change their diets first and begin exercising six months after their diet change will lose the same amount of weight after 12 months as those participants who eat healthier and exercised over the course of the whole year. In short: don’t put off your weight loss goals just because you don’t want to exercise. Change your diet today by eating more weight loss foods, exercise later, and you can still lose weight.
High-intensity interval training (HIIT) is a great belly-blasting option for those who already feel comfortable in the gym because it helps you drop fatty tissue and build muscle simultaneously. “High-intensity interval training is when you perform an exercise at or close to your maximum ability for a short period of time and then take a brief respite and do it again. HIIT should usually be done on a 2:1 interval, meaning if you did an exercise for one minute, you rest for 30 seconds and then repeat,” explains Dr. Alex Tauberg, DC, CSCS, EMR in 50 Ways to Shrink Your Belly. To use HIIT to shrink your belly, do workouts that engage your core such as abdominal crunches or bridges. “By performing core workouts using a HIIT plan, you can burn calories and build muscle at the same time,” Alex adds. “This can be a great way to flatten that stomach when you don’t have too much time to work out.”
While having a scale in the house isn’t right for everyone, research has shown that it can help encourage weight loss by providing a level of accountability. When Cornell University researchers observed dieters who weighed themselves daily, they discovered that the routine of stepping on a scale helped those people lose more weight than those who weighed themselves less frequently. To avoid being thrown off by natural fluctuations in body weight, try stepping onto the scale the same time every day.
Sauces and spreads. Eat lean protein (like chicken, eggs, fish, pork, or lean beef) that is grilled without oil and free of any sauces and spreads. These items boost the calorie intake of your meal by hundreds of calories and often add a lot of salt, which could sabotage your weight-loss plans. Eating your meal without these extras is easier than you would imagine.
If you’re on a quest to jumpstart weight loss, why not kick your metabolism into overdrive by sneaking spicy foods into your diet. Capsaicin, the active ingredient in cayenne pepper that gives it its spiciness, revs up your metabolism in a way that’s conducive to weight loss. In fact, according to a study in the American Journal of Clinical Nutrition, those who supplemented their diet with capsaicin consumed 200 fewer calories during their next meal.
“Tahini is an oft-forgotten option for nut and seed butters, but it sits front and center in my fridge because it delivers major creaminess to sauces and smoothies and packs a powerful flavor punch,” says Willow Jarosh MS, RD co-owner of C&J Nutrition. “Although some advise against eating the spread because of its high omega 3:6 ratio, the super high intake of omega-6s in the average American’s diet isn’t due to things like tahini—it’s mostly from not eating a variety of fats or consuming the majority of fats from fried foods and packaged snacks. As long as you’re also eating foods rich in omega-3s, your end-of-day ratio should be nothing to worry about. Plus, tahini is loaded with tons of healthy nutrients like copper, which helps maintain anti-inflammatory and antioxidant responses in the body. It also provides six percent of the day’s calcium in just one tablespoon.”
Blueberries are lousy with antioxidants, satiating fiber, potassium, and more, and according to researchers at the University of Michigan, the colorful fruits may also encourage weight loss. In a study of laboratory rats, scientists found that after 90 days the rats who consumed blueberry-enriched powder as 2 percent of their diet had less abdominal fat, lower triglycerides, lower cholesterol, and improved fasting glucose and insulin sensitivity, than the rats who didn’t consume any blueberry-enriched powder.
Lentils and beans are great foods for weight loss, but chickpeas also belong in your pantry. They contain a whopping 39 grams of protein per cup, which nearly meets your recommended daily amount from the USDA, so you're guaranteed to stay full for awhile after noshing on these beauties. Most eat them in hummus form, but you could also toss them in seasonings and roast in the oven, which you can then sprinkle into meals or eat alone for a crunchy snack.
Another condiment worth utilizing in place of sugary dressings and marinades is apple cider vinegar. According to a study published in Bioscience, Biotechnology, & Biochemistry, consuming apple cider vinegar each day can lead to weight loss, reduced belly fat, waist circumference, and lower blood triglycerides. More specifically, the study of obese Japanese participants found that those who consumed 1 tablespoon of ACV over a three month period lost 2.6 pounds, and those who consumed 2 tablespoons lost 3.7 pounds in the same time frame. Go ahead and toss a tablespoon or two of this calorie, fat, and sugar-free stuff in your next salad dressing, sauce, or smoothie.
With just seven days, you also don't have time to put together a total weight loss workout program. And if you try to do hardcore fat-burning workouts without any previous experience, you could easily injure yourself. So if you want to lose weight in a week, increase your steps per day to burn more calories. Exercise can also help reduce stress and improve your sleep, both of which may also contribute to weight loss.
Avocados are rich in monounsaturated fatty acids, dietary fiber, potassium and phytochemicals. People who eat avocados tend to have lower BMI, body weight and waist circumference than people who skip this green superfood, per a study in Nutrition Journal. While avocados are higher in calories than other fruits and vegetables, their satisfying fat and fiber combo may help you slim down. Add some to your salad, sandwich or taco night for a burst of creaminess and flavor.