Good morning, class. Today we're discussing the impact of urban green spaces on mental health. A recent study followed 500 residents in a major city over two years. Participants who visited parks at least three times a week reported lower stress levels and improved mood. Interestingly, the size of the green space mattered less than the frequency of visits. However, the study also found that people living within a 10-minute walk of a park were 40% more likely to exercise regularly. This suggests that accessibility, not just presence, is key. So, for city planners, the priority should be creating small, nearby green areas rather than large, distant parks.