Singing for your Wellbeing
Introduction
Singing in a choir is beneficial in a number of different ways. It not only helps forge social bonds, it also does so particularly quickly, acting as an excellent icebreaker. Group singing can also improve physical and mental health.
Body and Mind
Researchers from the University of Gothenburg in Sweden found that
singing in a group leads to the synchronisation of heart rates,
and increased the variability of heart rate, which is potentially
beneficial as low variability is linked to high blood pressure.
All that standing up straight helps to improve posture and deepens
breathing. Professor Graham Welch of the University of London, says:
"Singing is an aerobic activity that increases oxygenation in the
bloodstream and exercises major muscle groups in the upper body,
even when sitting."
Studies from the Goethe University and from the Royal College of Music
found that amateur group singing can also help improve the immune system
and, in particular, in the defence against respiratory infections and
even cancer. Listening to and participating in music has also been shown
to be effective in pain relief, too, probably due to the release of
neurochemicals such as β-endorphin (a natural painkiller responsible
for the "high" experienced after intense exercise).

Regular choir members report that learning new songs is cognitively stimulating and helps their memory, and it has been shown that singing can help those suffering from dementia, too. The satisfaction of performing together, even without an audience, is likely to be associated with activation of the brain's reward system, including the dopamine pathway, which keeps people coming back for more.
The Psychology of Singing
Singing has also been shown to improve our sense of happiness and
wellbeing. Research has found, for example, that people feel more
positive after actively singing than they do after passively listening
to music or after chatting about positive life events. Improved mood
probably in part comes directly from the release of positive
neurochemicals such as β-endorphin, dopamine and serotonin. It is also
likely to be influenced by changes in our sense of social closeness with
others. Increasing evidence suggests that our social connections can
play a vital role in maintaining our health - a good social network,
for example, can have more health benefits than giving up smoking.
So it's possible that singing can improve health by expanding our
social group. Indeed, the rapid social bonding that choirs encourage
could therefore be even more beneficial. Even if we don't necessarily
talk to everyone in our choir, we might experience a general feeling of
being connected with the group, leading to our sense of increased
community and belonging.