A typical serving of beer (about 12-ounces) contains anywhere from seven to 14 grams of carbohydrates, with lighter beers containing as low as 2 grams. So depending on your weight and how hard you trained, beer may be a decent option for replenishing your carb energy. When it comes to building your bod, balancing the booze with an overall healthy lifestyle and nutrition plan can help you physically and socially.