When grabbing grub at a fast-food restaurant, the “combo” or “value meals” are typically less expensive and make you feel like you’re getting a better deal, but oftentimes they’re also nutritional nightmares. A study in the Journal of Public Policy & Marketing  shows that compared to ordering à la carte, you pick up a hundred or more extra calories by opting for the aforementioned cheap “value meals.” That’s because, when you order items bundled together, you’re likely to buy more food than you need or want, and end up overeating as a result. To keep your weight in check, order your food piecemeal instead.

Dieters and ETNT staffers alike fell head over heels for green tea—and it’s easy to see why: The cornerstone brew of The 7-Day Flat-Belly Tea Cleanse is packed with compounds called catechins, belly-fat crusaders that blast belly fat by revving the metabolism, increasing the release of fat from fat cells, and then speeding up the liver’s fat burning capacity. In an American Physiological Society study, participants who combined a daily habit of 4-5 cups of green boosted their exercise endurance by up to 24 percent, revving weight loss. Make the most of the benefits from tea with The 7-Day Flat-Belly Tea Cleanse, by food journalist Kelly Choi and the editors of Eat This, Not That!, test panelists lost up to 10 pounds in one week!

The next time you're craving some crunch, drop the potato chips and grab celery. The veggie is essentially all water and fiber — two things that fill you up quickly — and while one cup of chips can be upward of 160 calories, celery only contains about 14 calories per cup, chopped. Dip them in a serving of natural peanut butter (it's best if the ingredients list only has peanuts and salt on it) or hummus for a healthy snack.

It's a one-time investment you'll never regret. Here's why: Strength training builds lean muscle tissue, which burns more calories — at work or at rest — 24 hours a day, seven days a week. The more lean muscle you have, the faster you'll slim down. How do you start strength training? Try some push-ups or a few squats or lunges. Use your free weights to perform simple bicep curls or tricep pulls right in your home or office. Do these exercises three to four times per week, and you'll soon see a rapid improvement.
Not to be outdone, oolong tea—a Chinese beverage—can help those who drink it shed up to a pound per week. According to a study in the Chinese Journal of Integrative Medicine, participants who regularly sipped oolong tea lost six pounds over the course of six weeks. What’s more? The tea’s antioxidants are thought to remove harmful free radicals and improve bone health.
Going long periods of time without food does double-duty harm on our healthy eating efforts by both slowing down your metabolism, and priming you for another binge later in the day. (Think: You've skipped breakfast and lunch, so you're ready to takedown a whole turkey by dinner!) Make it your mission to eat three meals and two snacks every day, and don't wait longer than three to four hours without eating. Set a "snack alarm" on your phone if needed.
The Beach Body Workout: This twelve week HIIT program only takes 21 minutes, three days a week, and is designed to help strengthen and sculpt your body, while also shedding weight. The program targets specific areas of your body, such as your arms and abs, and integrates cardio and stretching. After week one of the program, you will start to notice a leaner look and stronger muscles.[14]
Spirulina is a high-protein seaweed supplement that’s typically dried and sold in powdered form. The dried stuff is about 60 percent protein, and, like quinoa, it’s a complete protein—deeming it a great weight loss tool. A tablespoon of the blue-green algae delivers 8 grams of metabolism-boosting protein for just 43 calories, plus half a day’s allotment of vitamin B12, which can encourage weight loss by giving you more energy and boosting your metabolism. Try tossing some spirulina into a smoothie and watch the pounds melt off.

Kefir is a yogurt-like substance, but it actually contains less sugar and more protein than conventional yogurt while remaining packed with gut-friendly probiotics that can help you lose weight by aiding digestion. In one study, kefir displayed weight loss properties similar to those of milk and other dairy-rich products. Other probiotic-rich foods include kombucha, bone broth, and fermented items such as sauerkraut and kimchi.

Before you begin the habit of refilling your water bottle several times a day, make sure yours isn’t laced with BPA. A Harvard study found that adults with the highest concentration of BPA in their urine had significantly larger waists and a 75 percent greater chance of being obese than those in the lowest quartile. No wonder why drinking out of plastic bottles is one of our 40 Bad Habits That Make You Fat! To avoid weight gain, make sure your bottle is BPA-free and be particularly wary of plastics that sport a #7 recycling symbol on them, which is an indicator that BPA may be present.
PROTEIN FOODS: Make sure your diet plan allows plenty of protein while you are losing weight. This will help you feel stronger while you are eating a lot fewer calories. Choose meat, fish, and poultry that is very lean before cooking. Remove all fat from meats and skin from poultry before cooking. Nuts and seeds are high in fat so limit the amount you eat. Do not eat more than 3 to 4 eggs a week. Use low fat and fat-free dairy products, salad dressings, and cheeses.
Just because you’re trying to slim down, that doesn’t mean you have to forgo the occasional dessert splurge. There’s a simple solution to having your cake and eating it, too: Eat healthfully 80 percent of the time and reserve the remaining 20 percent of the time to cheat meals. Balance is key to sticking to your diet and dropping weight and maintaining it in the long run.
Though it’s hardly realistic to keep people from moving north, there’s evidence to suggest that those living in northern latitudes may need to be a bit more careful about their gut health than the rest of us. A study in the journal Biology Letters  found that living in northern latitudes encourages the growth of Firmicutes microbes, which have been linked to weight gain while decreasing the number of microbes linked with slim body types called Bacteroidetes. Generally speaking, the research showed that the number of Firmicutes increases with latitude and the number of Bacteroidetes decreases with latitude. To help ensure a healthy gut no matter where you reside, make sure your diet includes fermented and probiotic-rich foods, both of which encourage the growth of healthy gut bacteria.
A Credit Suisse Research Institute report found that more and more of us are choosing full-fat foods over skim, light, fat-free, or other modern monikers of leanness. And while many health organizations like the American Heart Association still recommend cutting down on fat—particularly saturated fat—this full-fat trend may be a healthy rebellion against those decades-old credos, according to recent studies. In fact, people who eat a lot of high-fat dairy products actually have the lowest incidence of diabetes, according to a 2015 study of 26,930 people in the American Journal of Clinical Nutrition. Those who ate a lot of low-fat dairy products, on the other hand, had the highest incidence. So what’s the best way to join the full-fat revolution? Eat This, Not That! polled some of the country’s top nutrition experts and asked for their favorite full-fat fat burners. Check out what they said in our exclusive report the 20 best full-fat foods for weight loss.

Stephen Colbert may be on to something. UCLA Center for Human Nutrition researchers divided study participants into two groups, each of which were fed a nearly identical low-cal diet for 12-weeks. The only difference between the groups was what they were given to eat as an afternoon snack. One group ate 220-calories of pretzels while the other group munched on 240-calories worth of pistachios. Just four weeks into the study, the pistachio group had reduced their BMI by a point, while the pretzel-eating group stayed the same, and their cholesterol and triglyceride levels showed improvements as well.