Understanding what alcohol does to your body and the risks associated with alcohol use can help you in many ways: You can make a more informed decision about whether or not to drink. You can recognize the warning signs of dangerous intoxication and call EMS for a friend. You can reduce the risks associated with using alcohol, including injury, unwanted sex and being a victim of crime. If you choose to drink, you can make safer decisions about drinking. You can get help for yourself or for a friend.