Stretch! Flexia is trying to touch her toes, but a cheeky puppy keeps tickling her feet! She knows that stretching and being strong helps our bodies feel happy and ready for fun. A) The Tale of the Strong Body and the Happy Heart. B) To make your muscles strong, is it better to lift heavy teddy bears or light feathers? C) Let's stretch up to the sky and then curl down into a tiny little ball!