Providing urine for Doping Control before major competitions was part of the routine. "We were told we could have accidentally taken something in a cold medication, and that the tests were for our own protection she says. In reality such internal tests were the key to the system’s success. Any athlete whose urine still showed traces of drugs was not allowed to travel; this way the GDR avoided having athletes test positive at international competitions.
By the time she was 15, people remarked that Birgit’s voice had deepened. "I didn’t notice it myself," she says. Her parents, who fully supported her career, maintain they never noticed it either even though they saw her everyday. "It was those who saw me less often that mentioned it to me," she continues. "I asked my coach about it and he told me it was from the humidity in the swimming hall and our frequent colds."