Back pain is a common problem that affects most people at some point in their life . It usually feels like an ache, tension or stiffness in your back. The pain can be triggered by bad posture while sitting or standing, bending awkwardly, or lifting incorrectly. Back pain is not generally caused by a serious condition and, in most cases, it gets better within 12 weeks. It can usually be successfully treated by taking painkillers and keeping mobile.