A study published in the International Journal of Environmental Research and Public Health reported on the mental health benefits of walking in greenspace.

Walking or spending time in greenspace can be cost effective way to improve mental wellness, thus in addition to reducing stress, anxiety, and improving mood for those experiencing the wear and tear of everyday life, physical activity in greenspace may also provide an important adjunct therapy to clinical therapies [12,101,102,103,104,105]. These results support the development of evidence-based recommendations for Nature Rx to encourage people to be physically active in nature [106,107,108,109].

Conclusions arising from our results: (1) a 50 min walk makes a positive impact on acute measures of mental health; (2) a 50 min walk in a forest amplifies the acute mental health benefits conferred via walking, even when participants experience a 20 min drive to and from the walk location.