In today's lecture, we'll discuss the impact of urban green spaces on mental health. Recent studies show that even small parks in city centers can reduce stress levels significantly. One key finding is that people who visit these areas for at least 30 minutes a week report better mood and lower anxiety. However, the benefits are stronger when the spaces include water features or trees, rather than just grass. Interestingly, the frequency of visits matters more than the duration of each visit. So, a daily 10-minute walk in a nearby park may be more effective than a long weekend trip to the countryside.