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Exercise physiologist Exercise physiologist Carol Sames, PhD Carol Sames, PhD, talks about the life-long benefits of exercise for teens. Pediatrician, talks about the life-long benefits of exercise for teens. Pediatrician George Starr, MD George Starr, MD, discusses whether dyslexia creates a learning disability. And, discusses whether dyslexia creates a learning disability. And Michael Lax, MD, and Jerrold Abraham, MD Michael Lax, MD, and Jerrold Abraham, MD, explain how a person's job could lead to cancer., explain how a person's job could lead to cancer.