Alcohol
Drinking moderately means women should only be consuming one standard drink per day, which is equivalent to a single glass of wine, a bottle of beer, or a shot of liquor. For men, two drinks per day is the standard.
Alcohol gets metabolized right away because your body can’t store it. This means any other fats and sugars you’ve eaten that day are pushed to the wayside as your body processes the booze, which can result in weight gain.