Losing two pounds overnight is possible, but you will be losing two pounds of water weight.
Drink plenty of water during the day. Get adequate water as it is the best way to quench your thirst, it's calorie-free and it moves food through your system more quickly.
Avoid carbohydrates after lunchtime, when there is less time left in the day to burn them off. Relaxing with little activity in the evenings gives you a higher chance of the carbohydrates turning into fat. Eat lean protein, such as baked chicken, and vegetables for dinner instead of starches.
Eliminate processed foods and drinks from your diet. Avoid foods laden with sugar; empty calories and processed ingredients will pack on the pounds, and avoiding these foods will help you make healthier choices that will aid in your weight-loss endeavors.
Add fiber to your diet. Consume fruits, vegetables and whole grains to help you lose weight overnight, feel fuller more quickly and keep your bowel movements regular to help maintain a fit figure.
Exercise no later than three hours before bedtime. Burn more calories than you are consuming to lose weight, and exercise to help you burn more calories while losing water weight from sweat.