Neuroscientist-developed 20-5-3 rule suggests spending time in nature for optimal health benefits. The rule recommends 20 minutes thrice weekly in nearby nature, 5 hours monthly in semi-wild areas, and 3 days annually in the wilderness. Studies show this reduces stress, improves mental clarity, and boosts overall well-being. Neuroscientist-developed 20-5-3 rule suggests spending time in nature for optimal health benefits. The rule recommends 20 minutes thrice weekly in nearby nature, 5 hours monthly in semi-wild areas, and 3 days annually in the wilderness. Studies show this reduces stress, improves mental clarity, and boosts overall well-being. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle