Is it wrong to eat before bed, especially if it's a carbohydrate?

Many people limit their intake of carbs in the evening because it tends to be the slowest time of day in terms of physical activity. So in turn, they think if they eat just before bed, they'll store more of the carbs as fat while they sleep. This idea neglects two important points. First, the carbs you eat late in the evening don't make it into your general circulation until early the next morning, providing they are complex carbs and not simple. They supply you with energy for the next day's activities.

You also need to think about your total daily caloric intake. Let's assume that you need to eat 2,000 calories each day to maintain your weight. If you had only 1,200 to 1,500 calories earlier in the day, you wouldn't gain fat if you ate 500-800 calories of carbs in the evening. In fact, if you are trying to gain muscle your body will need those carbs to prevent you from sleeping in a catabolic state(burning muscle as fuel). Try to eat five-six small clean-eating meals throughout the day and don't feel guilty about having a small meal later in the evening if you're truly hungry. Your metabolism will stay on high speed and you'll burn more fat in the long run.