According to an article by Rob Sproule from the Edmonton Journal,
"A recent study from the University of Bristol confirmed that exposure to a soil-borne bacteria called Mycobacterium vaccae actually altered the brain chemistry of mice in the same way that anti-depressants do. The friendly bacteria activates serotonin, releasing neutrons in the brain (otherwise known as the happiness hormone)."
Sproule goes on to state that, "growing plants is an uplifting, life-affirming contrast with our often frustratingly repetitive daily routine. It turns out that the inner glow you feel when you put your hands in fresh soil isn’t just psychological, it’s chemical!"
So what are you waiting for? Get your hands in the dirt, head in the sun, and your heart with nature!