Final answer:
Proper lifting technique involves bending at the knees and using your legs to lift, which greatly reduces the force on your spine compared to lifting with your back.
Step-by-step explanation:
The correct technique for lifting is to bend at your knees and lift with your legs, keeping your back straight. This method of lifting is essential to minimize the force exerted on your spine which is relatively weak compared to other parts of your body. When lifting with your back erect and using your legs to raise the body and load, the forces in the back are about 5.6 times smaller.
It is crucial to avoid lifting with your back as it can create excessive force on your spine, potentially leading to injury.