So, here's an update. Week 4, Day 3 I developed some pain that wasn't normal at all. I couldn't make it around the block. I came home, defeated and disappointed and started icing my left knee. That was a Friday. Saturday it was worse. MUCH worse. I called my doc, he said ice every two hours, no heat. Sent me some meds for the pain. I saw the doc on Monday and he referred me to my orthopedic guy - so many steps for insurance, it is ridiculous. Finally a week later, I'm on a cane and still icing and the ortho guy says I need an MRI - thinks we are dealing with a torn meniscus. Another week to get an MRI. MRI came in and the good news was NO torn meniscus and absolutely NO signs of arthritis at all in a 61 year old knee! BUT. I have a stress fracture n the upper part of the tibia, running ALMOSt to the top of the bone; within 1/4". Had it been closer he would have suggested surgery to pin/screw it into place. So, into a brace and crutches for a few weeks.
I was worried it would break again but the doc says that a stress fracture actually heals stronger than surrounding bone so it likely wouldn't happen in the same location. He also says that after our March 11th appointment, I will likely come out of the brace but he strongly suggests that I not go immediately back to the program (which BTW he thinks is AOK). His suggestion is that after the brace comes off that I still be careful for another 30 days and then start back with a codicil: don't do the program as designed, but repeat each week. So two week one, two week two, etc. Build slower and more carefully.
I also am totally guilty, your honor, of not stretching properly. I relied on the 5 minute warm up walk to do it. My doc sat on the floor with me and showed me how to properly stretch and gave me some tips. He is training for an ironman and has many marathons under his belt so I figure the guy knows his stuff.
So there is my update. 60 isn't too late IF you do it right, but there can be problems and we just have to deal with it.
I was disappointed because I have to tell you, the sense of accomplishment I got during week 3 and the start of week 4 were crazy good for my old ego. I will be back. I will start again. I will follow my doctors advice and go slow(er) and stretch better!