When you think of jobs that are physically demanding, you probably think of firefighters and construction workers and lumberjacks. But if you really want to put your body to the test try being in "Swan Lake".

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A new study found the most physically demanding jobs in the United States and believe it or not, dancer came in first. Why? It basically requires an unlimited amount of strength and stamina.

    Here's the top 10:

  1. Dancers.
  2. Fitness trainers and aerobics instructors.
  3. Structural iron and steel workers.
  4. Reinforcing iron and rebar workers.
  5. Forest firefighters.
  6. Fence builders.
  7. Athletes.
  8. Lumberjacks.
  9. Correctional officers.
  10. Mobile home movers and installers.

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