" In the 1980s, the American researcher Roger Ulrich discovered that simply having a room with a view of a natural environment rather than a brick wall helped patients at a Philadelphia hospital recover more quickly from gallbladder surgery. They also reported being less depressed and having less pain. Other studies have shown that being immersed in nature can lower blood pressure, reduce stress, and lessen ADHD symptoms. "

― Linda Åkeson McGurk , There's No Such Thing as Bad Weather: A Scandinavian Mom's Secrets for Raising Healthy, Resilient, and Confident Kids (from Friluftsliv to Hygge)