Stay in well-lit areas, walk midway between curbs and buildings, and stay away from alleys and bushes. Never hitchhike or take rides from strangers. If your purse or wallet is snatched, don't fight back. Rather than risk personal injury, hand it over and then report the incident immediately to the UWM police. Indicate that you are aware of your surroundings and have a destination.
Body language works.
Alcohol and drugs can seriously affect your ability to think clearly and act cautiously.