After undergoing brain surgery, Meagan Johnson is once again feeling good enough to dance. The Alabama 17-year-old danced to Britney Spears' "Toxic" as she left Children's Healthcare of Atlanta in June. When she was 7 years old, Johnson underwent brain surgery for a serious neurological condition at the same hospital. She suffered a stroke and was unable to speak, but when "Toxic" came on, she tried to dance. She chose the song again 10 years later as she celebrated her recovery.