Wow, Z! I couldn't believe my eyes when I saw your video! You are one amazing man. And it's no use my saying to myself, 'well, he's 8 years younger than you' - I couldn't have done all that as well as you were doing it when I was 53. And you appeared to be doing your exercises on an icy surface! Gosh, I am envious (not of the ice, but of your athletic ability). I did try some of those star jumps after I saw your vid, but my attempts were laughable! Still, now we all have something to aim for, having seen you. You're an inspiration, Z, you really are! I'm so glad you're going to go into the BoneSmart library and be preserved for posterity.
And I also wanted to say thank you for the photo of someone doing hamstring stretch up against the door jamb. Can't remember whether this was on your thread or someone else's, but I'm sure it was you who posted it. I found this was impossible (leg that's supposed to be on the ground was waving about in the air), but my modification was to get my bottom right up to the skirting board, then get both legs straight up the wall and just lie like that for 10 mins or so. Not only does it stretch the hamstrings but also was a fantastic relief for my painful lower back. So thanks!