Avoid foods which contain caffeine like coffee, tea & chocolates. Cut down on fluids at night as it will reduce the number of visits to the bathroom. Also avoid spices like chilli & acidic foods like tomatoes at night to avoid heartburn & indigestion. Also avoid large meals and late dinner, as it may cause uneasiness. Give yourself 2-3 hours to digest your food before you retire to bed. If you suffer for nausea, take a light & bland snack before bed time like a cracker.