I am writing you with an update.  I am still doing my daily exercise routine and, despite some ongoing pain, have been able to kayak and swim all summer.  As the Buddists say, "Pain is inevitable, suffering is optional".  I find that I have much better upper body strength, especially for lifting the kayak out of the water.  So I don't have to drag it over the rocks and damage the keel!

Jennifer, you are a first-class professional.  I have truly benefited from your experience, good listening skills, and adept instruction.  Your advice and individualized exercise programme have helped me learn how to manage my back pain and remain active as I approach 70.  Thank you!