Our voice reveals the whole range of our personality. Is this true? I think it is. When we are born we have the power to shout out as loud as we can. It is nearly unbelievable how powerful we were. When we grew up we adapted first our voice and then our personality in the way the outer world wanted us. And the question is "Do we express our own sound, our own voice?" Above this I'm convinced that working on our voice is working on our personality and visa versa.
There are many books as well as science studies regarding the positive and beautiful effects on singing: it is healthy, funny and relaxing. I want to share with you some more deep insights regarding singing.