Our Dojo can be very warm, it is not very traditional compared to many. I wear a 14oz Gi, but it has been known that our Sensei will allow a T shirt to be worn in summer. Sensei always instructs us to drink plenty of water, but only on his word. YAME! is the most important command to halt technique as it could signal an emergency or serious injury. Our classes are in English, and Welsh, instruction to the higher grades is always in Japanese.