This is my mother's book. It seems to be a rare book. It has been stored without being read much, so it's quite clean. I think it's close to unused. Ships within 24 hours A decrease in height is one sign. If left untreated, the back and waist will curve, increasing the risk of becoming bedridden. It is highly likely to lead to major disabilities and illnesses. However, if you notice the changes in your body early on, get a checkup, and adopt appropriate lifestyle and exercise habits, you can stop the progression of a curved back and waist. You can also prevent conditions such as "pre-nursing care" locomotors syndrome, sarcopenia, and frailty. This book contains many methods approved by orthopedic and anti-aging medicine specialists to prevent and improve a curved waist and extend a healthy lifespan. It is recommended for those who are concerned about their own backs, as well as those who are concerned about their parents' backs. Prevent being bedridden and get a body that doesn't require nursing care!