Rha. I was at a lecture many years ago given by Steven Hillier. In it he said That to lower he thinks of staying up. And to rise he thinks of staying down . This is of course the upper body.The reason for this he explained, was that if the body lowers it will beat the knees every time, that makes the bottom stick out. To rise make sure the shoulders don't lift. Raise and lower using the undercarriage.