This book contains an in-depth study of the relationship between the assistance lifts (squats and pulls) and the competition lifts (snatch and clean & jerk), and how those assistance lifts can be implemented into the training regime to aid the lifter in developing their full potential. A good deal of sports science is based on the biological aspects of training, i.e., diet, supplements, cryogenics, etc., and, although these are important aspects, I believe physics plays a larger role in both the understanding and development of the lifter. Even though athletes are biological beings, they are still subject to the laws of physics. Sir Isaac Newton's 2nd law of motion, describes how force is distributed between mass and the acceleration of that mass or how that accelerated mass can increase force as well as decrease force if the mass is decelerating. In this book, I will try and explain the importance of measuring the time it takes to move the barbell over a specific distance with respect to both the assistance lifts (squats and pulls) and the competition lifts (snatch and clean & jerk).