18/11/2013 12:10 GMT | Updated 22/05/2015 10:12 BST

New York City Ballet: When The Hard Work Begins

After working as an apprentice, the next rank on a ballet dancer's career ladder is the corps de ballet. As the support group for the lead roles, members of the corps do the most dancing and it's often classed as the most strenuous stage in a dancer's life.

Watch below to find out what it takes to be a part of the New York City Ballet's corps.