Productivity at the Office - Workers, Get Out! (a bit)

A few weeks ago, Germany's new (female) employment minister, a Social Democrat (with a small child) publicly called for the end to pointless office hours. Note "pointless", not "office hours without qualification". She got ridiculed by much of the press, but I support her argumentation: not all jobs require rigid presence in one location, and productivity may not be very high - not to mention compatability with "family" or "life outside of work" (yes, there should be such a thing, in addition to 4-5 hours of sleep!). I personally like going to the office each day - it provides structure, and keeps me from procrastinating on such "productive" things such as grocery shopping, doing the laundry, or cleaning out random boxes. On the other hand, my brain goes into passive mode if I don't move a lot, and sitting at a computer (or in a useless meeting) makes me lethargic and as unproductive as can be. Let me read a newspaper, take a walk outside, or have a run on the treadmill (or, post-3 children, better still a walk at this stage...), and I can vent unproductive lethargy and frustration, and put things into a bigger picture - and be more creative and useful this way. Is a lunchbreak (if allowed) sufficient for this? Unfortunately not, as at least in my case, it's simply too short to wind down, re-energize, and have creative energy and thoughts. Plus it's rigidly timed. What's the solution? It of course depends on the job and company, but at least in my field (mainly brain-work, and networking), getting OUT of the office as much as possible, and to activate at times also some unusual connections (a la 10% google creative productivity time) seems ideal. It's just like parenting, or sitting at home all day long: at the office computer, you lose perspective. Whereas at home that corner of junk becomes "oh so important", at the office some random, irrelevant detail will become all-consuming. I'm not proposing full freedom for employees, but to sillily paraphrase "workers, unite!" (a bit), "office workers, get out!" (a bit).