I understand that swimmers need to be hydrodynamic, thus the leg shaving. The 'rest' is what's confusing me.
I can see two possible options.
1. You have a need for great speed in the water while nude (competitive skinny dipping?)
2. You have a significant other that requires you to have a razor-close shave on your unmentionables.
If it's (1), I have two questions: Do women compete in these competitions? and, if so, where and when do they take place?
If it's (2), I'm sorry.