Question: how many grams of carbs should i eat a day to gain muscle?
Answer: During the bulking phase, eat about 4-7 g/kg of body weight of carbohydrates per day, or 270-480 g/day for a 68 kg (150 lb.) person (2). Focus your carbs before and after your workouts to fuel yourself for your lifting sessions, and restore your glycogen stores post-workout.