seems dumb to me. maybe im just a noob. Why not just fight at what u actually are...lol...then u dont need to worry about taxing the liver/kidneys or going into the sauna.
In my opinion it is dumb. But what can you do? You can't really make a rule that says fighters aren't allowed to visit the sauna.
So if you get the choice of fighting a guy 30 pounds heavier than you or cutting weight I don't think it's a hard choice to make.