Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to sleep before final exams [title] Have your last meal at least two hours before bedtime. [step] A full stomach can keep you awake, especially if you're also stressing about an exam. Avoid heavy, greasy, rich, or spicy food before you sleep, as these foods are harder for your body to digest and can make it more difficult to fall asleep.

Ending1: Eating before and during your last meal can also be a good idea. [title] Begin concentrating enough before or during your exam to begin studying. Ending2: Any food that is overly greasy, high in sugar, or low in salt may interfere with sleeping. [substeps] Eat the vegetables first, bananas last, and fruits last. Ending3: [substeps] If you're having a late meal in favor of a healthy snack or a healthy lunch, go for those. Their lack of calorie restriction will keep you up late and give you a little extra energy before bed. Ending4: You could also wake up in the middle of the night with heartburn, which would put a damper on your rest plans. [substeps] Eating a light snack before bed is fine.

Answer format: ending1/ending2/ending3/ending4