Years of study have managed to prove that ions play a crucial role in our overall health, our behaviour and our emotions. In the end, the studies showed that negatively charged ions had a positive eﬀect on overall wellness, contrary to the positively charged ions. Negative ions can be produced by boiling water, for example. This is why your mood tends to change when you are near the sea, or a waterfall. Positive ions, on the other hand, are produced by electrical charges, storms, electronic devices, air conditioning and pollution, which promotes a level of stress on our bodies and our emotions. This results in a term we all know, a bad mood.