Doctor-recommended guidebook on exercise and stretching for children. Although it's aimed at children, the content is perfectly applicable to adults as well. - Title: Doctor-Recommended Children's Exercise - Price: 1500 yen - Target age: 3-12 years old - Contents: Information on muscle training & stretching - ISBN: 9784198603584 ⭐︎Thank you for viewing. I looked at it once after purchase and stored it on my bookshelf at home. It's in clean condition with no stains. There are no smokers or pets. Thank you.