What is Carb Cycling?
Zoe Schilling, PharmD.

Carbohydrate (carb) cycling is a dietary strategy that involves alternating between high-carbohydrate days and low-carbohydrate days. On high-carbohydrate days, individuals consume more carbohydrates than they would on low-carbohydrate days. The purpose of this strategy is to optimize energy levels and enhance athletic performance on high-carbohydrate days, while promoting fat loss and weight management on low-carbohydrate days.
The idea behind carb cycling is that on high-carbohydrate days, the body has access to more glucose, which is the primary fuel source for high-intensity exercise. This allows individuals to perform at a higher level during their workouts, leading to improved athletic performance. On low-carbohydrate days, the body is forced to use fat as a fuel source, which can help promote fat loss and weight management.
How to Implement Carb Cycling
Carb cycling can be implemented in a number of different ways, depending on an individual's goals and preferences. Here are a few examples of how to implement this dietary strategy:
The Classic Carb Cycling Method: This method involves alternating between high-carbohydrate days and low-carbohydrate days. On high-carbohydrate days, individuals consume 2-3 grams of carbohydrates per pound of body weight. On low-carbohydrate days, individuals consume 0.5-1 gram of carbohydrates per pound of body weight. Protein intake should remain consistent throughout the week, while fat intake may be adjusted to compensate for the increase or decrease in carbohydrate intake.
The Targeted Ketogenic Diet: This method involves consuming a low-carbohydrate diet most days of the week, but consuming a small amount of carbohydrates before and after workouts. The idea behind this method is to provide the body with the glucose it needs to perform at a high level during exercise, while still maintaining a state of ketosis for fat loss.
The Intermittent Fasting Carb Cycling Method: This method involves combining carb cycling with intermittent fasting. Individuals consume high-carbohydrate meals during their feeding window, and low-carbohydrate meals during their fasting window. This method may be more challenging to follow, but it can be effective for weight loss and fat loss.
Benefits of Carb Cycling
There are a number of potential benefits to carb cycling, including:
Improved Athletic Performance: By providing the body with more glucose on high-carbohydrate days, individuals may be able to perform at a higher level during their workouts.
Fat Loss: By consuming a low-carbohydrate diet on some days, individuals may be able to promote fat loss and weight management.
Increased Energy: Consuming a higher carbohydrate diet on some days may provide individuals with the energy they need to power through their workouts and daily activities.
Enhanced Insulin Sensitivity: By cycling carbohydrates, individuals may be able to enhance their insulin sensitivity, which can lead to better blood sugar control and a reduced risk of chronic diseases such as type 2 diabetes.
Here is an example of a carb cycling plan that alternates between high-carbohydrate and low-carbohydrate days:
Day 1: High-Carbohydrate Day
Breakfast: Oatmeal with banana and almonds
Snack: Greek yogurt with berries
Lunch: Brown rice, grilled chicken, and roasted vegetables
Snack: Apple slices with almond butter
Dinner: Sweet potato, salmon, and steamed broccoli
Total Carbohydrate Intake: 250 grams
Day 2: Low-Carbohydrate Day
Breakfast: Scrambled eggs with spinach and avocado
Snack: Celery with almond butter
Lunch: Mixed greens salad with grilled chicken, avocado, and olive oil dressing
Snack: Cottage cheese with sliced cucumber
Dinner: Grilled steak with roasted asparagus
Total Carbohydrate Intake: 50 grams
Day 3: High-Carbohydrate Day
Breakfast: Smoothie with banana, Greek yogurt, and almond milk
Snack: Apple slices with almond butter
Lunch: Quinoa, black beans, and grilled chicken
Snack: Protein bar
Dinner: Baked sweet potato, grilled salmon, and mixed vegetables
Total Carbohydrate Intake: 250 grams
Day 4: Low-Carbohydrate Day
Breakfast: Scrambled eggs with mushrooms and avocado
Snack: Celery with almond butter
Lunch: Mixed greens salad with grilled chicken, avocado, and olive oil dressing
Snack: Hard-boiled eggs
Dinner: Grilled chicken with sautéed kale and mushrooms
Total Carbohydrate Intake: 50 grams
This is just one example of how you could cycle your carbohydrate intake. Depending on your goals and preferences, you could adjust the amount of carbohydrates you consume on high-carbohydrate and low-carbohydrate days. It's important to listen to your body and make adjustments as needed to ensure that you're getting the nutrients you need while following a carb cycling plan.
Conclusion
Carb cycling is a dietary strategy that involves alternating between high-carbohydrate days and low-carbohydrate days. This method can be effective for improving athletic performance, promoting fat loss, and enhancing energy levels. There are a number of different ways to implement carb cycling, so individuals can choose a method that works best for their goals and preferences. As with any diet, it's important to consult with a healthcare professional before making any significant changes to your diet.