Good morning, everyone. Today we'll discuss the impact of urban green spaces. According to a recent study, parks not only improve air quality but also significantly reduce stress levels. The researchers monitored heart rates of volunteers who walked through city streets versus those who strolled in a park. Surprisingly, the park walkers showed a 20% drop in cortisol, a stress hormone. Additionally, the study found that even five minutes of exposure to greenery can boost mood, though longer periods are needed for long-term benefits. However, the effect was weaker in highly polluted areas, so planting more trees in such zones should be a priority.
❓ ¿Qué reveló el estudio sobre caminar en un parque en comparación con caminar por las calles de la ciudad?
A. A. Los paseantes del parque tuvieron un aumento del 20% en los niveles de cortisol.
B. B. Los caminantes del parque mostraron una reducción significativa en las hormonas del estrés.
C. C. Los caminantes de calles urbanas se sentían más felices que los caminantes de parques.
D. D. Ambos grupos tuvieron niveles de estrés similares después de caminar.
✅ 正确答案
B. Park walkers showed a significant reduction in stress hormones.