Which part of the body should be primarily used for a heavy lift?

The legs are the primary part of the body that should be used for a heavy lift because they are the strongest muscle group and provide the most power and stability. Engaging the legs allows for a proper lifting technique that utilizes the strength of the large muscles in the lower body, minimizing the risk of injury. When performing a heavy lift, bending at the knees and using the legs to lift helps to distribute the weight evenly and reduces strain on the back and other areas. This technique is crucial for maintaining safety and efficiency during lifting operations in fire and rescue situations.