I’ve had my Geekdesk for more than five years now.
The positive affect on my health is hard to quantify, but I’m pretty sure it’s more than a placebo effect.
My core is definitely firmer (Those are abs you see, not rolls!) and my back is stronger.
And what about the hundreds of hours of standing vs sitting? That’s gotta make a difference!
There’s been an interesting progression in the use of my desk.