Muscles and bones shape major regions of the human body and major fields of health, both of which encompass numerous categories and specialties of medicine—not to mention hundreds and hundreds of body parts! Nevertheless, I wanted to  nclude as many aspects and approaches as possible with longer discussions reserved for areas that more greatly interest the reader. I cannot speak for everyone, of course. However, the topics and issues consistently addressed in the media revealed most people’s primary concerns to be the same as mine—concerns about understanding the bodies we have been given, building our muscles, protecting our bones, managing pain, finding the most effective treatments, and, yes, aging with energy, mobility, ingenuity, and strength.