Think about your favorite way to spend time in nature. Is it taking a walk through a park? Lying on the grass and looking at clouds? Smelling your neighbor’s rose bushes? No matter where you do it, breathing fresh air and looking at greenery is really good for your health. Studies show that spending just 20 to 30 minutes in nature three times a week can reduce your levels of both physical and mental stress. So read on to learn more about how nature affects your body, mind, and mood. And the next time you find yourself on a hiking trail or in a city park, remember to take it all in.