As is often the case with famous people, everything of famous people is put a price.
I've heard that parts of audiences of Arashi*1's performance tried to get sweat dropping out from the performer's body. In a common sense, we may think that it is grotesque to get one's sweat.
But, once one is to be revered, even sweat of the one also will be sacred.
So, I recommend you to sell your belongings including something in your body, when you become a famous one.
*1:Japanese idol group
