Hi Connie, I'm one of the members at Zero. Thanks for the blog on sweat, I wish some of your students read this. When I attend some of the classes, some of the students actually switched off the fan. This caused the room to be quite stuffy due to the humidity. At times, I'll just on it again, after 10 minutes hehehe... I know you have the notices on this but sad to say, they don't read. Anyway, thanks a lot for the blog!