A yoga teacher says this is the one move you should be doing to keep your back flexible as you age

Group of people in a large bright studio performing cat-cow yoga pose back stretch.

Back pain and stiffness are common complaints, especially as we age. Natural wear and tear over the years plays a part but spending prolonged periods sitting down—especially if you work a desk job—can make things worse.

The good news? There's a simple solution to help counteract the negative impact: stretching.