When you run in parks, trails, or greenways you get more than cardio: sensory contact with nature quickly lowers cortisol, reduces anxiety and negative thinking, and boosts mood and self‑esteem within minutes. Short, frequent outdoor runs can match longer indoor workouts for mental gains, and varied natural settings enhance attention and memory. Be mindful of safety, footwear, and terrain to maximize benefits. Keep going to learn practical session designs, locations, and science-backed tips.