There's more to it than "Lift with your legs." Remember this advice from the National Safety Council:
* First, calculate whether the load may be too heavy. Get help if you aren't sure you can easily lift it.
* Always stretch before lifting and carrying if you have been sitting or inactive for a time.
* Start with feet apart, one foot slightly ahead of the other for a wide base of support.
* Bend at the knees and squat down. Arch your back slightly and keep your head up in a natural way during the lift. You'll get more power from large muscles of the legs and keep the weight off your back.
* Keep objects as close as possible to your body.
* Lift smoothly. Avoid jerky movements, twisting, and side bending.
* With the load in hand, stand up straight.
