klebba
No, I wear clown shoes. Actually I walk in various Salomon shoes designed for distance trekking. As for the desk, it's built to my measurements and I did my research.
In short; I really just use the computer too much. I appreciate your analysis but the answer is that no amount of perfecting my daily routine will circumvent that truth.
I have worked in an Aeron chair for most of my career. The majority of my day is spent sitting down -- sometimes at my computer and sometimes in meetings. That's what my job is like right now. If you're like me, when you get home from work you go right back to the computer like a moth to a lamp. Advice about moderation is completely lost on me because I'm a glutton for computing -- that's just my reality. To mitigate the amount of time I sit during the day, I built a standing desk and spent my evening hours using it. It was great -- my posture improved and the contrast from sitting is something my body really enjoyed. I stood barefoot on a rolled up Yoga mat thinking that it would be a sufficient cushion. My weight is ~150 lbs and I would not consider myself unfit -- I walk several miles a day to and from work. Nonetheless my feet became increasingly sore. At first I thought nothing of it because I've often had sore feet from activity and it's never been chronic. Gradually the pain increased and became persistent through my day. By the time I realized I had become afflicted by Plantar fasciitis it was too late. I immediately abandoned the standing desk but recovery has still been extremely slow. The injury isn't massively painful but it can take _multiple_ years to heal in bad cases. Mostly the pain is a constant reminder that I am a moth.
Use my cautionary tale however you see fit, but remember that the lesson boils down to one real truth: there is no way to avoid the health hazards associated with excess computing.