This is a practical guide introducing stretches and training methods helpful for running for those in their 40s and 50s. I bought it thinking, "Let's go back to the basics of running and run in a way that suits my age..." but I received the same book as a gift (lol). Is anyone interested in reading it? - Title: "Don't Overdo It" Running for Middle Age - Author: James Nakano - ISBN: 978-4-8090-0790-5 - Target Age: 40s and 50s - Content: Includes many stretches effective for knee pain, joint pain, incontinence, and lower back pain.