Stay healthy . Eat well and get sufficient rest. If you become ill, get proper care. Don't hesitate to tell your host family or onsite director if you are ill and don't be afraid to visit a doctor or hospital just because you don't speak the language fluently. Guard personal belongings .
Pickpockets can be extremely adept.
Don't carry your passport or money in a hip pocket, open purse, or outside pocket on your backpack. Pickpockets mingle widely in tourist crowds, especially at airports, travel agencies, and American Express offices. A money belt or neck pouch is a good idea. If you need to sleep while in transit, use your pack as your pillow. On crowded city subways, always carry your daypack in front of you.