Back in the day, nobody worried half as much about every single calorie in a glass of beer or wine, but times change. If you are trying to watch your waistline while still enjoying a weekend drink, sticking to traditional dry white wine or a simple glass of whiskey with water is your best bet. People nowadays fill their glasses with all kinds of sugary syrups, artificial flavorings, and chemical-laden mixers that cause more weight gain than the alcohol itself. Keep it simple, avoid the sweet cocktails, and you should be just fine without ruining your hard work.