Sinking I don’t believe it was any kind of challenge because as I understand it that is a total therapeutic no-no. As a matter of fact somebody’s girlfriend just got jail time here in the U.S. for doing something like that. Her boyfriend kept threatening to off himself and she finally got tired of it and told him to go ahead. He did, and wham! They arrested her.
and she was just his girlfriend, not a professional of any kind.