Most people are familiar with the area where they are living for a long period of time, however they are at a distinct disadvantage when they travel to a new city or place, especially when they are alone. It remains difficult to predict what kind of people they will meet, as it remains difficult to trust anyone with whom he or she has interacted with only for a short period of time.
With advances in technology and hitech torture weapons being widely used, a person can fall sick while traveling due to factors beyond his or her control. There are some methods of tips for travelers to avoid problems when then travel. More details at Travelers Help, advice for people who travel to a new place or on work.