Study finds singing for an hour can boost your immune system Study finds singing for an hour can boost your immune system http://www.boston.com/news/health/2016/04/07/study-finds-singing-for-an-hour-can-boost-your-immune-system
Study finds singing for an hour can boost your immune system http://www.boston.com/news/health/2016/04/07/study-finds-singing-for-an-hour-can-boost-your-immune-system