So one component of the Holiday Belly Burn Program is a focus on eating well, but in control, such that when the big holiday meal rolls around, your body can accommodate the "extra" fuel.
Carbohydrates are food macronutrients that the body converts to glucose to fuel itself. If you consume more carbohydrates than your body needs, it stores some of those carbs as glycogen in the liver and muscles and the remainder as fat.
You will typically find "diets" that emphasize fat burning will have a lower carbohydrate profile, mainly because of the impact on blood sugar and insulin levels.
Rule #2 of the Holiday Belly Burn is Carb Control, Specifically, with a focus on Net Carbs. Your focus during the challenge is to scale your total carb consumption down as the 6-weeks progresses. You will want to consume less than 75 grams of (net) carbs per day on week one, less than 50 on week 2 and less than 40 on weeks 3 & 4.
You can start out lower if you want.
Week 1: < 75g Week
Week 2: < 60g Week
Weeks 3-6: < 50g
Net Carbs are effectively the variance between total carbs in a food less the dietary fiber. Because fiber is a carbohydrate that your body cannot digest, it does not raise your blood sugar levels or trigger an insulin response. The presence of fiber in the digestive tract also slows the absorption of any other carbohydrates, mitigating blood sugar spikes and insulin release.
As an example, a 1-cup serving of cooked broccoli provides 11.2 grams of total carbohydrate and 5.1 grams of fiber for a net carb contribution of 6.1 grams.