If you ate nothing but Twinkies or apples for a few months, you'd probably lose weight. You'd also lose muscle mass and gym performance—and threaten your overall health. Your goal is to build a healthy diet that gives you the right amount of macros (proteins, carbohydrates, and fats) that will sustain you over that time. Let's look at these macros one at a time.
Calm the fuck down and be patient. You didn’t get out of shape in a week, you’re not getting in shape in a week. The people who have this “fast fat loss” mentality are also the ones who tend to gain it back after the diet ends, or quit entirely after a few weeks. Not because aggressive dieting doesn’t work, but because this mentality encourages the use of fad diets that, a) won’t be sustainable in the long-term, and b) doesn’t help you build the habits that allow you to maintain the loss in the long run. 15
So how does this work? A quick run-through: The first tip was to eat low carb. This is because a low-carb diet lowers your levels of the fat-storing hormone insulin, allowing your fat deposits to shrink and release their stored energy. This tends to cause you to want to consume fewer calories than you expend – without hunger – and lose weight. Several of the tips mentioned above are about fine-tuning your diet to better this effect.
REALITY: Fat doesn’t make you fat—consuming too many calories does. Foods that contain fat are part of a healthy diet, help maintain your lean body mass, and assist with metabolic function. Healthy fats, like omega-3 fatty acids, can be found in extra-virgin olive oil, coconut oil, almonds, avocados, cashews, peanuts, walnuts, flaxseeds, and more. If you want to lose fat, you need to eat fewer calories and/or burn more calories.
"If your diet consists of lots of sports drinks, sugar-sweetened drinks like fizzy pop and flavoured waters, or sugary foods like chocolate and cakes, it will make losing weight harder. While whole fruits and vegetables are undoubtedly good for you, they can also sometimes cause weight gain if you eat too much, as they have high levels of natural sugars in them. Low-fat food options might have high amounts of added sugar in there too, so make sure to check the food label.
Glycogen is the unused and stored form of carbohydrates in muscles. When glycogen stores begin to peak from eating plenty of carbs, the body upgrades its fat-storing ability. Conversely, as glycogen stores are depleted, fat-burning increases. One way to kick-start the fat-burning process is to go extremely low-carb on two consecutive days every couple of weeks. This ensures that you tap into your glycogen stores for fuel, which signals the body to burn more fat.