When sitting for long periods of time, sit up straight and tuck a folded towel or jacket behind the small of your back. This will help you maintain correct posture. When picking up objects from the floor, bend your knees, not your back. This movement utilizes the large leg muscles, which are stronger than your back. Physical Fitness Weak abdominal muscles are a major cause of lower back pain and injury.
Flexibility is also key to preventing injury.
Abdominal crunches, if performed correctly, will tone and strengthen your muscles. Bend your knees. Keep your feet flat on the floor at about shoulder width apart. Place your hands behind your head. Exhale, and use your abdominal muscles to slowly raise your shoulders, while keeping your lower back pressed against the floor.