Perhaps you bent the wrong way while lifting something heavy. Or you’re dealing with a degenerative condition like arthritis. Whatever the cause, once you have low back pain, it can be hard to shake. About one in four Americans say they’ve had a recent bout of low back pain. And almost everyone can expect to experience back pain at some point in their lives. Sometimes, it’s clearly serious: You were injured, or you feel numbness, weakness, or tingling in the legs. Call the doctor, of course. But for routine and mild low back pain, here are a few simple tips to try at home.