A new paper in Forest Bathing (shinrin-yoku) was published in Environ Health Prev Med. as follows:

Effects of forest bathing (shinrin-yoku) on serotonin in serum, depressive symptoms and subjective sleep quality in middle-aged males. Environ Health Prev Med. 2022;27:44. doi: 10.1265/ehpm.22-00136.
Li Q, Ochiai H, Ochiai T, Takayama N, Kumeda S, Miura T, Aoyagi Y, Imai M
https://pubmed.ncbi.nlm.nih.gov/36328588/
The IF (impact factor) is 4.395.
http://www.nihon-eisei.org/activity/journals/ehpm-gate/