I’m not going to pretend that I understood the importance of this when I was a physical therapist. I’m still a physical therapist, but when I was working as one – you know what I mean. No I didn’t really and truly get this until I had a stroke and had to do it myself. To recover a movement after a stroke, you have to do it A LOT. Repetition is the number one, most important concept in stroke recovery. To recover a movement, you have to do it over and over and over and over – and over. I used to think when I was a physical therapist – because a clinical instructor of mine said it to me when I was a student and it stuck – that why would you make someone do something in the clinic when they come to PT when you’ve given it to them for homework and they can just do it at home? Because people don’t do what they should do at home – for the most part. That’s been my experience anyway, the majority of my patients did not do what I told them to do at home. AND because like I said before, it takes doing something over and over and over and over – possibly millions of times. How do you think Nolan Ryan got so good? He pitched everyday over and over and over and over. Now in orthopedics you can overuse a muscle, that’s usually how you get tendonitis. But I wouldn’t worry about that when recovering from a stroke. There are some movements I can’t even do right now, let alone overdo.