For example, when it comes to hormones, ghrelin makes you hungry, leptin and other hormones keep you feeling full, Nadolsky says. Thyroid, cortisol, insulin, testosterone, and estrogen all influence how you metabolize and store energy. Meanwhile, genetics have a large influence on both basal metabolic rate (how many calories you burn just to live) and hormone health. While all of these things are impacted by our diet, they’re not only controlled by the way we eat. And, in fact, while sleep, stress management, and, when needed, medication can help regulate other hormone levels such as estrogen and thyroid, our hormones and other physiological processes are often out of our control. And by the way, being able to impact our hormone levels and metabolism with our diet doesn’t always work out in favor of weight loss. As a 2016 review notes, one of the reasons weight loss by way of caloric restriction isn’t efficacious is because “this strategy is countered by the body’s natural physiological response to negative energy balance.” In other words: The body fights back against caloric restriction.
‘Lastly, if your nutrition is on point but you still have excess tummy fat, then you need to look at your training. There’s a real craze for high-intensity workouts and really pushing yourself at the moment, but training is a stress on the body, and if you’re not giving it the tools to manage that stress and recover from it, then it can lead things like excess belly fat.
Have Protein at Every Meal and Snack. Adding a source of lean or low-fat protein to each meal and snack will help keep you feeling full longer so you're less likely to overeat. Try low-fat yogurt, small portion of nuts, peanut butter, eggs, beans, or lean meats. Experts also recommend eating small, frequent meals and snacks (every 3-4 hours), to keep your blood sugar levels steady and to avoid overindulging.
HIIT was originally developed by track coaches to train runners, but it has crossed over to the fitness industry due to its fat-burning benefits confirmed many times over in scientific studies (see "HIIT Findings"). A lot of these studies found that subjects performing HIIT burned significantly more body fat—and in less time—than those who did steady-state cardio programs.
We all get by with a little help from our friends, and this is especially true of people who have lost weight and kept it off. In one study among women who went through a 12-week weight loss program, 74 percent of them maintained their loss or lost more in the three years after the program ended. Those who reported having a support system around eating well were more likely to keep the weight off. (Support around exercise didn’t seem to matter.) Another study found that the type of support you receive matters, too. Your friend who’s cheering you on isn’t likely to be as helpful as your friend who will pass on the fries when you’re trying to eat well. When you’re going out to eat, join friends who will support your healthy eating goals and go to a museum or movie with those who are less likely to be in it with you. Your pals who are in the trenches with you are more likely to hold you accountable, and that’s going to help you in the long run.
In other words, sticking with an exercise regimen can trigger sticking with a healthier diet, but it's best if you don't think of it as a way of burning off calories for the sake of weight loss. So, cultivate an exercise practice you actually enjoy, stick with it, and know that it’s making you healthier, and let it inspire you to make the choices you consider healthy.
A little garlic in your meals could mean a lot less weight around your middle. The results of a Korean study found that mice given a high-fat diet supplemented with garlic lost significantly more weight and abdominal fat than those who just ate fatty foods. Even better, they also improved their liver health, making it easier to stay healthy and burn off that excess fat in the long term. For more flavorful ways to make your food more enjoyable, turn to the metabolism-boosting spicy recipes and watch those pounds melt away.