High-calorie drinks. Sweetened beverages are full of calories. Drink water this week and avoid all alcohol (wine, beer, and cocktails), juice, sports drinks, sweetened teas, flavored coffee drinks, soda, and commercially flavored water (such as vitamin waters). You can also make flavored water with fresh lemon juice or other fruit if you don't like plain water. Stay hydrated, but avoid drinks that cause weight gain via empty (non-nutritive) calories.
Ultimately, long-term weight loss requires some short-term behavior change and healthier habit formation. That's why we created our Good Housekeeping Nutritionist Approved Emblem, which exists to help turn smart food choices into healthier eating habits. All GHNA foods and drinks make it easier to find — and eat — good-for-you foods without additional time, effort, and cost. We target the lifestyle-related factors that make healthier eating hard, and find simple but creative solutions that actually work! Look for the emblem on labels wherever you shop for food.
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.

Sure, trampolines are built for kids, but as an adult, using one for rebounding is a great way to flatten your tummy and get rid of excess fat. “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: everything you need for a tight tummy!” explains Hope Pedraza, a Certified Personal Trainer through American College of Sports Medicine in 50 Ways to Shrink Your Belly. To get a comprehensive workout using a mini trampoline, Pedraza 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.

^{While all fruits are healthy, a handful of them reigns supreme when it comes to frying fat and de-bloating your belly. University of Kentucky researchers found that eating watermelon can lower fat accumulation, while another group of great minds discovered that honeydew can banish water retention and bloating. Spend ten minutes chopping up these slimming fruits for the week ahead. Enjoy them solo as a snack, throw them into yogurt or add them to salads.}
“I wish people knew that gluten-free foods aren’t all automatically healthy,” Torey Armul, MS, RD, CSSD, LDN, spokesperson for the Academy of Nutrition and Dietetics tells us in 22 Top Weight Loss Tips, According to Nutritionists. “People often lose weight and feel better on a gluten-free diet, but it’s usually not because of lack of gluten. It’s because they’re paying attention to their food choices and eating more real foods and less simple carbs. Gluten-free labeled packaged foods actually tend to have more calories and extra fat or sugar for added flavor.”

And speaking of eating full-fat fare, a cutting-edge review published in PLOS One discovered that when it comes to reducing cardiovascular risk and promoting rapid weight loss, low-carb diets are superior to low-fat diets. Can’t imagine fully committing to a low-carb lifestyle? Start by eliminating empty sources of carbs from your diet such as white bread, desserts, and sugary drinks.

Do high intensity interval training (HIIT). HIIT is an exercise program that alternates intense exercises with short intervals of recovery or rest. This type of exercise will help you burn fat fast. High intensity exercises force your body to use the sugars in your body and allows you to burn fat faster than low intensity workouts. You will also use stored body fat during the recovery phase, which will reduce your stored body fat. You can perform HIIT exercises with gym equipment, or an exercise mat and a few free weights. There are several popular HIIT programs, including:[13]
Want to lose weight? Grab a bottle of V8! According to a study published in Nutrition Journal, tomato juice consumption can aid weight loss because it increases resting energy expenditure (REE)—the amount of energy expended by a person at rest. After eight weeks of drinking unsalted tomato juice twice daily, the 95 women in the study (who were each exhibiting some menopausal symptoms) increased their REE by an average of over 100 calories per day.
Since avocados are packed with nutrients and healthy fats that can stimulate weight loss, it’s no surprise that avocado oil acts in a similar fashion. When Penn State University researchers compared those who consumed monounsaturated-rich oils (like high-oleic canola oil or avocado oil) with those who consumed a flax-safflower oil blend, they found that those who used just three tablespoons of the monounsaturated-rich oil daily lost nearly two percent of their belly fat in just one month.
“There are so many amazing properties in tea and so many healthy foods that require hot water,” Emmy-award winning and author of The 7-Day Flat-Belly Tea Cleanse, Kelly Choi says. “But I’ll swap in hot green tea instead of water for things like oatmeal and quinoa. I’ve seen so many people benefit from my tea cleanse that it inspired me to keep the tea flowing whenever I can!”
Kamut is an ancient grain native to the Middle East that is an excellent source of heart-healthy omega-3 fatty acids, protein, and fiber, while simultaneously being low in calories. In fact, a half-cup serving of the stuff has 30 percent more protein than regular wheat and just 140 calories. What’s more? A study published in the European Journal of Clinical Nutrition found that eating Kamut reduces cholesterol, blood sugar, and cytokines (which cause inflammation throughout the body). Kamut’s ability to stabilize blood sugar and reduce inflammation make it a great weight loss staple, especially if it is used in place of nutritionally lacking refined grains.
_{Think of sweet potatoes as nature’s dessert. Not only do they satisfy your sweet tooth, these taters digest slowly and keep you feeling fuller for longer thanks to their satiating fiber. They’re also brimming with carotenoids, antioxidants that stabilize blood-sugar levels and lower insulin resistance—which prevent calories from being converted into fat.}
Are frequent meals your ticket to a better body? Experts say so! In a Journal of the Academy of Nutrition and Dietetics study that sampled 2,385 adults, research participants who ate less than four times a day consumed more calories and had a higher BMI than those who sat down to eat at least six times. The scientists noticed that those who ate fewer meals consumed most of their calories at night and were more apt to drink alcohol with their meals while their ever-grazing counterparts tended to eat healthier, less calorically dense foods. To keep the weight flying off your frame, nosh on these high-protein snacks between meals.
^{Stretch after you warm up with cardio and at the end of your workout. It's important to stretch your muscles after your five to ten minute cardio warm up so you do not injure yourself while doing high intensity exercises. You should also stretch for five to ten minutes at the end of your workout. Stretching will keep you from pulling your muscles or harming your body.}
_{Most people think of their protein or meat as their meal’s main event, but that shouldn’t be the case. “Place flavorful vegetables front and center on lunch and dinner plates, accompanied by sides of protein and whole grains,” registered dietitian Cheryl Forberg said. By simply rearranging your plate, you’ll automatically consume fewer calories and take in more health-protective vitamins and nutrients.}
When many of us have too many options to choose from, we often become flustered and make the wrong decision. Same goes for food. If you have a few different boxes of cereal and a handful of flavors of potato chips, you’re likely to eat more of the packaged stuff. Limiting your options to just one can cut down on your grazing habits and prevent a snack attack.
We’ve been clear on the benefits of wild salmon, but those pink creatures are quite literally not the only fish in the sea. Generally speaking, fish provide one of the best sources of fatty acids known as omega-3s, which will help fend off waist-widening inflammation and are an excellent source of high-quality, lean protein. This allows them to help you maintain muscle mass, thus reducing excess fat accumulation. Some of our favorite healthy seafood include mussels, Atlantic mackerel, and bluefish, but be sure to educate yourself on the ocean dwellers with this list of Every Popular Fish—Ranked for Nutritional Benefits!
Making your sandwich with two slices of bread is so last year. Aid your slim down efforts by opting for whole-grain bread over white and preparing your sandwich “open-faced” style—the fancy name for kicking the top piece of bread to the curb. Doing so keeps about 70 to 120 calories off your plate. If losing some bread leaves your tummy rumbling, beef up your meal by munching on a cup of baby carrots or sugar snap peas. These pop-in-your-mouth veggies are loaded with fiber and water, which can help aid satiety and weight loss efforts.
The best diet for losing weight is Weight Watchers, according to the experts who rated the diets below for U.S. News. Volumetrics came in second, and the Flexitarian Diet, Jenny Craig and the vegan diet were third on this overall weight loss ranking list, which takes into account short-term and long-term weight loss scores. Some other diets performed as well or better in our rankings for enabling fast weight loss, but long-term weight loss is more important for your health.