An abstract of a presentation made at the Radiological Society of North America (RSNA) suggests that too much exercise may accelerate the degeneration of knee cartilage in healthy adults. These MRI-based results come from a 4-year study of 205 individuals, aged 45-60 years, who exercised at various intensity levels. Although the definition of "too much" may vary per person, these preliminary findings strongly suggest that it may be important to appropriately monitor the intensity of physical exercise.
PositiveTip: Exercise is vital to good health, but we can get too much of a good thing. Use moderation when engaging in exercise.