While one slice of your favorite pizza isn’t the end of the world, are you sure you can stop at only one slice? Yes, pizza is tasty and easy to make, but it contains mega calories so eating it right before bed will make you gain weight faster. The tomato sauce that layers your pizza contains high levels of acidity that can lead to acid reflux. Plus, the greasy toppings can give you heartburn. If you want to wake up in the middle of the night and stay awake until the morning, you can still eat your pizza before bedtime. But if you want to have a high quality sleep, avoid it at all costs. Though, you may want to try a vegetable pizza with carrots and red bell peppers, but without that layer of tomato sauce and without any other unhealthy foods.