For most holiday travelers, going on a cruise is a great way to unwind from life’s daily hustle and bustle. Once aboard, they can simply take a nap whenever they feel like it, enjoy sunrise and sunset without worrying about deadlines, or spend hours playing cards with their friends. But, amidst all the fun, travelers must be careful about what they eat on a cruise. Here are five foods to avoid when on a cruise: Scrambled eggs Scrambled eggs (especially when it is made and served on a cruise) often contain harmful bacteria such as listeria and salmonella that can give anybody a bad tummy for days, or might lead to other diseases. This makes scrambled eggs one of the top five foods to avoid when on a cruise. To avoid stomach sickness, travelers can instead opt for fresh or hard-boiled eggs instead of scrambled eggs. Old pizza Unfortunately, most pizzas served on cruises may come with a congealed-cheese look, indicating that they have been kept in the open for a while. Such pizzas are old and, most possibly, stale, making them unfit for a meal. In fact, any dishes containing old cheese, if served aboard, automatically classify into the top five foods to avoid when on a cruise.