You must be insane...But then during one of the worst heatwaves last Summer I dropped by my friends Kajukenbo Dojo and found them sparring, wearing those heavyweight Gi's no less.....
During certain classes I just like to flip the heat switch on to really aid in the sweating process. (I just have to make sure that everyone knows where the bathroom or exit doors are) When you have the heat going them it really is hot in there.