Age affects flexibility and joint health significantly. As people age, they typically experience a decline in collagen production, leading to stiffer joints and reduced elasticity in muscles and connective tissues. This natural aging process can result in decreased range of motion and increased risk of injury. Regular physical activity, particularly stretching and flexibility exercises, can mitigate these effects and maintain joint health. Engaging in activities like yoga or pilates promotes flexibility, strength, and balance, which can significantly enhance mobility and overall quality of life as one ages.