Negative ions are called anions. Negative ions are odorless, tasteless, and invisible molecules that we inhale in abundance in certain environments — in a shower or after a thunderstorm. When you breath them in, your mood is boosted and your pain reduced.
![In the Park After a Rainstorm](http://www.mywellnessnetwork.com/wp-content/uploads/2014/06/After-The-Rain-Songwriting-4.jpg)