04/11/2026
Following rain, conifers emit phytoncides which are volatile organic compounds to protect themselves from insects and decay. When inhaled, phytoncides reduce stress hormones (cortisol and adrenaline), lower blood pressure and boost the immune system by increasing the activity of natural killer cells. ☔️
The earthy smell of rain, known as petrichor, is largely caused by geosmin, a chemical released by soil-dwelling bacteria (actinomycetes) when rain hits the ground. These compounds, combined with moisture, act as natural aromatherapy, helping to trigger relaxation, reduce anxiety, and improve mood. ☔️
One of the reasons our moods are improved after PLAYING outside in the rain!!! ☔️