It could be any historical figure, musician, thinker, painter, inventor, pioneer, scientist, athlete, even a friend or a family member, etc. And why would you choose that person? Disclaimer: this question is of a hypothetical nature, hence, answers like "I love myself and wouldn't be nobody else" and "If I was another person, it wouldn't be me" need not be posted. Also, many, if not most, people are content with their body; this question aims to generate some thought and perhaps some self reflection but it does not want to question self esteem values, self image, etc. I got to sleep, but tomorrow, I'll follow up.