Without joints, movement would be impossible. This episode explores how cartilage, menisci, ligaments and synovial fluid work together to keep the body moving smoothly. Why do joints crack? Can exercise really protect them? And what happens when things go wrong? We look at common joint problems, including ACL injuries and wrist ganglions that can cause pain and sometimes require surgery. We also examine a lesser-known link between menopause, falling estrogen levels and joint pain in the shoulders, hips and knees. Experts say this often-overlooked connection deserves far more attention.