Perhaps you're halfway through a Pilates class when your knee makes an audible click during a squat. Maybe your shoulder pops every time you lift your arm overhead, or your hips click during leg circles on the reformer. Most joint clicking is harmless. Understanding when it matters can help you move with greater confidence. For many people, these noises immediately trigger concern. "Am I damaging my joint?" "Should I stop exercising?" "Does this mean I have arthritis?" The re