The great outdoors might just be greater than you think. There are plenty of us who love to spend as many hours of the day outdoors as we can, and walking is obviously quite healthy for the body, but few of us ever give a lot of thought to how nature walking could benefit our mental health as well. According to a study published last July, a 90 minute walk through a natural environment had a huge positive impact on participants. In a survey taken afterwards, those people who took the natural walk showed far lower levels of brooding, or obsessive worry. Whereas, the control group spent that 90 minutes walking through a city actually reported no such difference.