For foreigners, it is advisable to avoid explicit gestures and physical contact such as backslapping
or hugging and to maintain a sufficient distance not to invade the personal space of anyone around you,
except where this cannot be avoided (such as when using public transport, during the rush
hour). Unnecessarily long eye contact is also considered an invasion of privacy and can be interpreted as
anything from being rude to being a sign of aggression and should therefore be avoided.