What is a recommended precaution when lifting heavy objects?

When lifting heavy objects, bending at the knees and keeping the object close to the body is a recommended precaution because this technique helps to maintain proper body mechanics and reduces the risk of injury. By bending at the knees, you are able to use the strength of your legs and avoid straining your back. Keeping the object close to your body helps to ensure that the weight is distributed evenly, providing better balance and stability during the lift. This practice minimizes the load on the spine and allows for stronger and safer lifting, thereby preventing back injury and enhancing overall lifting efficiency.