"Lift with your knees, not your back." It’s not as simple as it sounds! This project is an investigation into the merit of this age-old idiom, because the stoop lift-- lifting with your back-- may not be as bad as you think. In order to investigate each type of lift, the Vicon Motion Capture system will be used to obtain precise data for each lift. This is done by placing markers on the subject while they perform the lift. The data recorded by this system can then be used for a physiological analysis of each lift. This analysis allows for a numerical comparison rather than just a comparison of posture. Physiological analyses look into how much energy must be used and at what rate that energy must be used. A large part of my research will be background research, so that I am able to perform a physiological analysis for the data that is collected. This type of research is important for prevention of back injuries and is often applied to workplace situations where employees must perform repeated lifts.