This book is significant for anyone who is personally or professionally involved with developmentally delayed children. It focuses on muscle hypotonia and its many nuances. The book addresses the questions of affected parents of children with muscle hypotonia, which can occur after premature birth, in cases of adaptation and movement disorders, as well as in genetic syndromes. The issues faced by developmentally delayed children are vividly illustrated through examples and dialogues: parents share their concerns, their search for effective neurophysiological therapies, and their experiences with the Bobath and Castillo Morales® concepts, posing questions to which the author responds directly. This creates a deep insight into family life, providing therapists, special educators, and pediatricians with a window to understand their clients. This non-fiction book offers valuable advice.