|A shrub, not a tree. Callicarpa dichotoma 'Early Amethyst'|
Phytoncides are "antimicrobial volatile organic compounds derived from trees". They are good for you. They are supposed to help improve your immune system and reduce stress.
What could be better?
In my garden, I also imagine the tree fairies are hanging out in the trees bombarding me with phytoncides. "Here she comes, blast her!" "Good shot, Maple Phytonflinger, you hit her right on top of her head."
Yes, go right ahead, tree fairies, hit me with all you've got because phytoncides are good for me.
Seriously, for just a minute. I first read about phytoncides and studies related to their benefits in Your Brain on Nature: The Science of Nature's Influence on Your Health, Happiness and Vitality
by Eva M. Selhub MD and Alan C. Logan ND (Wiley, 2012).
I think I do feel better when I am exposed to phytoncides, though I don't have the tests to prove why, as others have done. I just know that after spending time outside, I am more relaxed and less stressed.
Of course, I could just be more relaxed because after mowing the lawn, my fear that my grass will grow too long for me to mow it is no longer a fear, at least for another week.
But that's just silly. I'm really more relaxed because the tree fairies fling all kinds of phytoncides at me every time I got close to one of the trees they like to hide in.