How can you tell if you have a room full of thugs?
When we start coaching JJ we tend to believe we need to be able to "beat" all of our students, otherwise why would they listen to us right? WRONG. As a matter of fact that mentality will flow into your students and then everyone will try to "win" every round or game, this inhibits ability to learn and makes injuries more likely. Hard rolling is great for competition preparation but it MUST be done with the right training partners. If all the rolls are "to the death" with submissions being the aim it will scare off all the smaller men and women. 95% of your training should be measured and controlled with focus on efficiency, timing and technique. The easy way to know for sure is at least 10% of the mat is women.