With thanks today to Senator Scott Ludlam, who shared this juicy science on social media today.

Health Benefits from Nature Experiences Depend on Dose

We show that people who made long visits to green spaces had lower rates of depression and high blood pressure, and those who visited more frequently had greater social cohesion. Higher levels of physical activity were linked to both duration and frequency of green space visits. A dose-response analysis for depression and high blood pressure suggest that visits to outdoor green spaces of 30 minutes or more during the course of a week could reduce the population prevalence of these illnesses by up to 7% and 9% respectively.

Read more here: http://www.nature.com/articles/srep28551