22 Habits That Harm Your Spine

Sleeping on the Wrong Mattress

It should be firm enough to support your back, but soft enough to fit the shape of your body. Your ideal mattress can depend on how you sleep and whether you already have back pain. Want to see if a firmer one might help? Put yours on the floor for a couple of nights without the bedsprings. Some stores let you return a mattress, even after several weeks, if it causes back pain or other problems.