A stiff knee in the morning can change the whole day. So can an aching hip, swollen fingers, or a shoulder that complains every time a sweater goes on. Joint pain is common with age, but that doesn’t mean it should be ignored or treated like “just getting older.” Pain is a signal. Sometimes it points to wear and tear. Sometimes it points to inflammation, an old injury, weak muscles, or a medication side effect. The good news is that many daily habits can make joints feel bett