The premise is that three days spent totally in nature can have a profound impact on both physical and emotional health, on creativity and on mood. This short book is the account of the author taking several groups of men and women on three day treks into nature accompanied by scientists taking various book samples as well as psychological tests. The book is mostly accounts and interviews with the participants and the results of the actual tests are saved until the end of the book. I won't spoil it, but there is definately groundwork here which shows that nature has a good impact on us in many ways. ( )

Inspirational Outdoors
Review of the Audible Audio audiobook edition (2018)

This is a condensed audio documentary where the author joins with various groups to do outdoor excursions of rafting, hiking, camping etc. in order to obtain evidence of the beneficial effects of the experience. The groups include war veterans, women escaping abusive/trafficked situations, friends and a group/solo camping trip. Whether you buy into the science of it is besides the point as I don't think anyone would argue against the benefits of outdoor activity and exercise. The stories behind She Is Able were particularly moving.

The 3-Day Effect was one of the free Audible Originals for members in May 2019. ( )