7 Reasons You Gain Weight Overnight and What You Can Do About It

Whether you meant to or not, if you had cereal for breakfast, a sandwich for lunch, and pasta for dinner, you may see a couple of extra pounds on the scale the next day. Like sodium, carbs can also cause water retention. If you really want to shed that water weight quickly, stick to a lower carb diet the day after (think lean meats and fresh veggies), and it'll be gone in no time.