Muscle Building and Carbohydrates
No macronutrients should be cut out of a muscle building diet.
Carbohydrates provide the energy required to train and subsequently recover from a workout. Carbohydrate foods also provide a valuable source of calories, ensuring a positive energy balance. They also contain vitamins and minerals.
Amounts of carbohydrate required will vary from person to person.
As a rough guide, start by ingesting around 2g per pound of bodyweight a day.
If training and mass gains are low and energy levels are dropping, try increasing the amount of carbs consumed. Similarly, if the gain in fat mass is becoming excessive, then reduce the amount of carbs consumed.