Although back problems are common sources of pain and disability, most of these problems are preventable through the use of proper lifting techniques. Back problems may not necessarily be connected with work. Some non-work-related factors that can contribute to back problems are posture and physical condition. In most cases, these factors can be corrected. There are a few simple rules for good posture. When sitting, your knees should be slightly higher than your hips and your shoulders and upper back should be straight. Don’t slouch—stand straight with your weight centered over your hips. When lying down or sleeping, keep your knees slightly bent or lie on your back. Sleeping on your stomach can result in a morning backache. Emphasize the benefits of good physical condition. Obviously, a well-toned body can take an unexpected stress or strain better than one suffering from a lack of exercise. But, when you need to lift on the job, you need to follow safe lifting techniques.