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New Delhi: When Starkid was 21 years old, doctors discovered that he was suffering from a problem called scoliosis, which is a deformity of the spine. Doctors told him that he would never be able to dance. He also stammered, so he corrected himself through speech therapy. According to the IMDb report, he read a lot of research papers on scoliosis and improved his physique and stamina so much that he got the title of the fittest actor at the time of his debut. (Photo courtesy: Instagram@hrithikroshan)