Soft, silent and relaxed are the key words in our dojo for rolls. Breakfalls usually involve the noise of the slap. Saying this, last week I was teaching a ukemi class, but forgot my gi. Having rolled on the rockhard surface of the dojo without mats before, I was demonstrating how easy it is. However, in my jeans (and I don't know if it was the nobble of my jeans or that my gi belt usually protects the area) I hit a little bone on my hip, near my spine. I couldn't admit what I'd done so I was demonstrating and teaching the rest of the class in agony.