1. Bending at your waist to lift: This position places undue strain on the ligaments and discs of your back. It can cause early wear and tear. Rather, bend with your hips and knees to lift an object. Hold the object close to your body, then lift using the strength of your legs.
2. Sitting: done improperly and done too long, it can cause damage to your back and tighten up your hip muscles. Proper posture and good chairs with back support can help. Also, getting up to walk around regularly is important. Taking regular stretch breaks will help lessen the effect of sitting.
3. Twisting Your Spine while lifting: This position can lead to a disc herniation. Always use good lifting techniques. Square yourself to the object you are lifting, lift using your legs, keep the object close to your body and turn your whole body to go to where you want the object to be.
Courtesy of www.MyVitalityCenter.com