Books Lulu falls asleep and has an amazing dream…. she swallows herself – and meets her new Best Friends who introduce her to the vital connection of gut microbes to her own health.(ages 3 and up- includes song Do the Acidophilus Hula!) How Do You What? Be Good to Your Gut! An incredibly illustrated graphic novel on healthy/unhealthy food choices- where Lulu asks her organs and gut microbes ‘What are your most favorite and your least favorite foods?’(ages 8 and up)