Well I skipped the week after my second total knee replacement (doc’s orders), but did the PT exercises and went right back to my workouts in week 2, in addition to my PT. Lucked out that colonoscopy days were yoga, which I could do after I got home.
I’m a 66 year old woman and I can do one-arm, decline, military, wide stance, and every other kind of push-ups on my toes, except for plyo, 20-30 at a time, multiple sets per workout. I can also do unassisted pull-ups and chin-ups, but only 5 before I need assist. I do modify all the jumping stuff. I had to work up to backbends in yoga, but I’m doing them now. When I started, I could not do a single push-up on my knees. My “heavy” dumbbells were 5 lbs. Now they’re 20 lbs.
My calcium score is 0 and I’m in the best shape of my life. My husband asks why I don’t skip a day, and the answer is simple: I don’t want to start over. So every morning I work out, even though I rarely feel like it. Then I feel like a rockstar afterwards.
When weather permits, I also do a lot of yard work. That’s going to start very soon here.
You are correct. Just keep moving’! And lift those weights to strengthen your muscles and bones. It’s fun when you start to see that muscle definition! 
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