—Mom, I can’t sleep!— Why not?— I don’t know… I’m anxious and my head won’t stop thinking and thinking and thinking...— Would you like me to teach you how to breathe?— BREATHE? I already know how to breathe!— But have you ever stopped to think about how you do it? Where does the air go in and out? Whether you fill up your belly more or fill up your chest more?If you breathe slowly or quickly...