Walking outdoors provides more significant physical exertion and increased energy levels compared to indoor treadmill walking, according to a study. Outdoor exercise also enhances happiness and joy, benefiting both mental and physical health by creating a more engaging and fulfilling experience. Walking outdoors provides more significant physical exertion and increased energy levels compared to indoor treadmill walking, according to a study. Outdoor exercise also enhances happiness and joy, benefiting both mental and physical health by creating a more engaging and fulfilling experience. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle