Johnny Boo and the Happy Apples (Johnny Boo Book 3)

Johnny Boo has been eating a little too much ice cream, and now his muscles have gotten all floppy and droopy. Why, they're positively floopy. Terribly embarrassed by his own puny muscles, Johnny Boo sets out on a quest to find some happy apples that can give him strong happy muscles. But it won't be easy.