This book is a giant metaphor for calming oneself and getting in the space to meditate.  However, as an adult I barely get the metaphor, so I am not sure kids will.  I love the illustrations and the yoga poses by bear on the end papers.  In general I like the story, it has nice rhymes and a great cadence and would be a fun read aloud for 2 or 3 but I wonder how well it would work in a 30 kid story time setting.