Not only does singing, no matter how good you are, improve wellbeing, it has also been found to release endorphins and reduces levels of the stress hormone cortisol.
Recent research published in the journal in Perspectives in Public Health using self-reported data from 1,179 people around the world found "confirmatory evidence to support choral singing as a means of improving wellbeing.”
Previous research had similar findings.
In 2012, a study found endorphins were released when people perform as part of a choir but not while listening to music, as a result their pain threshold increased. This is because the breaths taken while singing ‘equate to aerobic exercise’, The Conversation reports.
In addition, a study published in the cancer journal from the European Institute of Oncology found cortisol, our stress hormone, was significantly reduced after an hour of singing.
Go forth and sing like no one's listening!