A consensus statement agreed by doctors, physiotherapists, nurses, psychologists and music therapists, follows a review of evidence that suggests singing helps people develop deeper and more controlled breathing.
Someone with a condition such as chronic obstructive pulmonary disease (COPD) - thought to affect three million people in the UK - will often need to take constant top-up breaths from their upper chest.
But singing can increase lung capacity and strengthen muscles which can lead to more confident and controlled breathing, according to the British Lung Foundation.
The charity also conducted a poll of the best carol songs to sing in order to improve lung health.
The festive songs were chosen because they do not have too large of a range, they have long phrases to extend out breath and pauses which allow time for singers to inhale.
The best carols to sing for your lungs:
Silent Night
Winter Wonderland
White Christmas
When A Child Is Born
Let It Snow
Speaking to Premier Rev Bazil Mead, Director of London Community Gospel Choir, acknowledged the physical benefits of carol singing.
He said: "During the course of rehearsing and preparing for performances, singing the songs, they do find that their lungs are strengthened.
"The more professional, the more challenging the song you're singing, means that those breathing organs are getting more exercise and are being pushed to the limit."
Rev Mead also stressed the spiritual benefit of singing carols.
He added: "The lyrics of Christmas carols are about God giving, about the baby Jesus coming to the Earth.
"The message we get from these particular songs - and we do try to put into practice what the songs are saying - is the giving of gifts."
Listen to Premier's Alex Williams speaking to Rev Bazil Mead:
