A person who is trapped outside in the extremely cold temperatures can suffer from frostbite, hypothermia, and cold-related organ shut down. This extremely dangerous situation can lead to death. When a person is rescued, the body much be reheated gradually but effectively. In a professional rescue situation, the victim is moved inside and covered in warming blankets, which are essentially fabric sheets with heat conducting coils inside. This contact with the heating elements increases the victim's body temperature slowly and allows blood to move to the organs and muscles once again. In the event that a professional rescue isn't available, two people can keep themselves warmer through body heat exchange, where heat from one person passes to the other colder person, and vice versa.