Want to have huge muscles but are too lazy to go to the gym? There could soon be a way.
In 2004, a young German boy was taken to the doctor by his mother, a former sprinter. At age 3, the boy was already incredibly strong and had the muscle development of a weightlifter. The muscles in his upper arms and legs were twice as big as other children's.
Doctors found that the boy had two defective copies of the myostatin gene. His mother, it turned out, had one defective copy, a mutation that had clearly helped in her athletic career.