Although the jerk seems to often take a back seat to the clean, it is the most demanding of foot work, speed, timing, as well as the most failed lift. It may seem simple, but as we all know, we can break down the jerk into multiple sections and work on different portions individually to get a better result. The first portion of the lift, the dip, is a great starting point because it sets us up for the rest of the lift. The dip should be controlled and calculated to ensure the weight doesn't crash or slide off the rack position here. They say the dip should be around 6 inches, however keep in mind everyone is different and will have more or less leg drive a different spots. So, next time you jerk, focus on getting a good consistent dip, and set yourself up for a better jerk. Here is a great video from HQ addressing this subject.