In today's lecture, we'll discuss the impact of urban green spaces on mental health. A recent study followed 500 residents in three cities over two years. Participants who visited parks at least once a week reported 20% lower stress levels compared to those who rarely went. Interestingly, the size of the park mattered less than the presence of water features, such as ponds or fountains. The study also noted that community gardens, though smaller, provided social benefits that enhanced emotional well-being. However, researchers cautioned that the effects were self-reported, and they plan to use wearable sensors in future studies to measure physiological responses.
❓ According to the lecture, what was the most significant factor in reducing stress for park visitors?