It is important to understand that weight is entirely a function of input and output. The input is the food you eat and the calories contained therein. The output is your energy output. To lose weight the output needs to be greater than the input. It is that simple. Do not believe any of the diet fads. If you are currently not gaining or losing weight then just burning 300 extra calories per week or eating/drinking 300 calories less per week (2 sodas for example or a small burger) WILL make you lose weight - in this case around 5 pounds of fat per year.
Which leads us to point number two: If you want to lose belly fat, you'll need to lose weight. If you stick to the following plan, you won't have to lose as much weight as you might think because your body will burn more fat for energy, but still. Reducing your body fat percentage will require losing some weight. Don't go into this thinking you won't have to lose weight, because that's the surest way to fail.
Make sure to program your cardio exercise in with your weight training the right way, though — a 2017 study found that performing cardio and weight training workouts on alternate days was far more effective for burning belly fat than stacking the workouts on top of each other in the same session. Put the two together, and watch that unhealthy midsection shrink.
“The best way to stick with a diet, is for people to put the fewest restrictions on themselves as possible,” Langer says. “There shouldn't be anything in the world that they shouldn't ever eat again.” Similarly, Albers recommends ditching the “don’t” list entirely. “Instead of trying to stop an old negative habit, focus on building a positive new one,” she says. “New habits crowd out the old without the struggle of trying to stop a behavior.”
“Do what works for you,” Langer says. “And if something doesn’t, change it. There’s a million other ways to go about it. There are no absolutes in nutrition.” Case in point: In a 2018 JAMA study, when more 600 adults who were classified as overweight followed a low-fat or low-carb eating plan over the course of 12 months, everyone lost about the same amount of weight.
And beyond that, weight-loss efforts can take an emotional toll. “It can destroy your relationship with food. It can lead you to feel obsessed and frustrated,” Albers explains. For some people, quitting dieting is better and healthier than continuing to try to lose weight. And whatever a person’s weight-loss goal, the priority should be first and foremost on health. “Eating for health frees you up emotionally and is based on improving your body rather than rejecting your body,” she says.
"Feeling stressed can wreak havoc on our bodies. It can cause our body to produce the steroid hormone cortisol, which can make you crave sugary foods that provide instant energy and pleasure. Short-term bursts of cortisol are necessary to help us cope with immediate danger, but our body will also release this hormone if we’re feeling stressed or anxious. When our cortisol levels are high for a long amount of time, it can increase the amount of fat you hold in your belly."