Environmental factors greatly influence outdoor exercise by affecting both comfort and performance. Factors such as weather, temperature, air quality, and terrain impact exercise effectiveness and enjoyment. For example, extreme heat can lead to dehydration and overheating, while cold or rainy conditions may discourage outdoor activity. Additionally, pleasant surroundings promote better mental health and increased motivation to exercise. Thus, understanding and adapting to these environmental factors is crucial for optimizing outdoor workouts and maintaining both safety and satisfaction in fitness routines.