Moving heavy items while relocating to another place can take a toll on your back. The best way to avoid back injury while on the move is to utilize legs for lifting items instead of your back. Squat down, grasp the item and pick it up placing weight on your legs instead of your back. By exerting pressure on leg muscles you will be able to avoid back injury. You can simplify the process of lifting boxes by distributing weight of boxes evenly. This can be done by packing items in various boxes, instead of loading all items in one single box.