Bow to the teacher before and after each class. Bow to your partner before and after each practice. The kohai must not look at the sempai 's face as he bows to the sempai , but should be able to see his own feet. Be sure that you are more than two arm's lengths away from that person. In bowing, hands must be in front or at the side of the body, and the feet together.
All etiquette is for self-preservation.
The training gi must be reasonably clean. Respect your partner's five senses. Our body reflects our mind, it is the mirror of our mind. We must wash our body every day with soap and water. Clean mind, clean body.