I moved so slowly and my shoulders ached from having to throw punches while weighed down . I could not believe that I was carrying that much extra weight around just a few months ago . When he finally took the vest off me , I felt as lithe and graceful as a ballerina and I was astounded at how much more quickly I could move . Chief has always said that he does n't care how much I weigh , only that I can move well and strike with force .
According to the above context, answer the following question.
What is my job ?


I am a boxer .