It’s well established that in order to lose body fat, you need to bring your daily caloric intake below your maintenance level for a certain time period. At first you lose weight, then your progress slows, and then you hit a plateau where you seemingly can’t lose any more weight. If you reduce your calorie intake even further, now you start to lose muscle in addition to losing fat due to your insufficient caloric intake. Again, that’s not good because this will lower your metabolic rate, making it even harder to lose fat. Also, when you restrict your caloric intake for a period of time, your body starts to think that you’re starving, and reacts by lowering your metabolic rate and increasing your appetite. Researchers believe that the reason your body does this relates to levels of a hormone in your body called leptin. The role leptin can seemingly play in keeping you lean is yet another reason not to banish carbohydrates from your diet, since occasionally overfeeding on carbohydrates can revamp your leptin levels.
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