Why Your Joints get Stiff, And What You Can Do

structure of bone joint
Your Age is Advancing
As you age, your cartilage — the spongy material that protects the ends of your bones — begins to dry out and stiffen. Your body also makes less synovial fluid, the stuff that acts like oil to keep your joints moving smoothly. The result: Your joints may not move as freely as they used to. It sounds a little crazy, but the best thing you can do is keep on trucking. Synovial fluid requires movement to keep your joints loose.