Which principle is NOT part of safe lifting techniques?

Using your back to lift is indeed not part of safe lifting techniques. The correct approach emphasizes using the legs and maintaining a straight back while lifting heavy items. This principle helps to minimize the risk of injury, especially to the spine. A proper lifting technique involves engaging the large muscle groups in the legs, which are designed to bear weight, rather than straining the back muscles, which are not meant for heavy lifting.

In contrast, keeping weight close to your body, stacking your posture, and reducing the height or distance of lifting are all recognized practices that support safe lifting. Keeping the load close reduces the strain on your body, maintaining a good posture aligns your spine and reduces the chance of injury, and lowering or minimizing the distance you lift decreases the effort required, making the lift safer overall. Adhering to these techniques promotes safety and efficiency in lifting, which is essential in any physical task involving heavy objects.