Quantifying something we can all feel:

ScienceDaily (May 1, 2010) — How much “green exercise” produces the greatest improvement in mood and sense of personal well-being? A new study in the American Chemical Society’s semi-monthly journal Environmental Science & Technology has a surprising answer.

The answer is likely to please people in a society with much to do but little time to do it: Just five minutes of exercise in a park, working in a backyard garden, on a nature trail, or other green space will benefit mental health.

All natural environments were beneficial including parks in urban settings. Green areas with water added something extra. A blue and green environment seems even better for health, Pretty noted.

Here’s a link to a news blurb in the journal:

Pretty says that his goal with this study is not to provide just another recommendation for individuals but to provide data that can be used in policy discussions. Those data “could translate into what the landscape guidelines are for schools or for public housing,” says Nancy Wells, associate professor of community ecology at Cornell University.

Here is a link to the actual article.