It is a pity to admit, but in modern society the greatest danger for health and life presents people. We got used to live in constant fear of becoming a victim of a crime or some terrorist action. This fear influences our lifestyle, makes it more stressful and prevents us from enjoying life to a full extent. Learning the basic principles of self-defense, however, will make your life safer.
First of all, remember that earphones are no good when it comes to walking late at night. Load music will prevent you from hearing suspicious steps behind and taking proper measures of precaution.