Well I have I guess two things to which might relate to this. First I do always feel more alive and in touch with the energy of the world when I am in a forest or really walking in a park for that matter. Secondly after meditating one night (one of the only times I have had a really deep meditative experience). I woke up the next morning and set out walking to class. I had the most over whelming desire to touch the trees that were around me. I felt there energy and the life that was around me and I wanted to be a part of that.