Airport Efficiency

I just flew to New York and back via Atlanta. You needn't touch a thing in the rest rooms except for a fresh paper towel that disperses at intervals just long enough that you wont wait for a second before making use of your first. A refreshing find was at Narita Airport in Japan several years ago where after placing your hands under the air hand dryer they were blasted with cool air, the water being literally blown off and and caught in a swoop below. I was wondering why that was there.
Always looking for the chance to keep up my health I began walking the concourse, one of six, which if not a half mile long was close. I soon noticed the same design in structure as that of the concourse in Milwaukee. Unfortunately it was not an enjoyable walk though I did get in over five miles continuous. I have been in high school corridors that were wider than the clear passage down the center of the concourse. If a weaker man I may have spent the majority of my time sitting and filling my stomach with the various fare provided by the scattered vendors up and down the concourse boarding my connecting flight several pounds heavier. With over 120 passengers on a 737 that would be a difference of several hundred pounds.
Perhaps the rarity of bubblers (water fountains) and the fact that when found they seldom work is by design to lighten the load of the aircraft. A kind of anti-thesis to the watering up of the cattle after a drive before taking them in to be weighed. Loss of up to a pound is not uncommon when getting in a long vigorous walk along with promoting regularity often disrupted by the anxiety of travel. With its frequent stresses, especially in air travel with long waits for connecting flights, would not facilities to promote exercise if not simply walking be a worthwhile design consideration? In this age of greenhouse gases and quest for fuel economy should not design consider smarter travel rather than people moving efficiency?
Of course I could have walked the tunnels connecting the concourses. Unfortunately I hadn't brought along any walking shoes trying to carry as little as possible and my feet were killing me on my return, not to mention not sleeping the entire trip due to lengthy delays on my way there. Makes you wonder if a high speed train would actually be quicker. I doubt a tunnel would have made an interesting walk but I found a proposal on the internet for an art oriented concourse design. Now if they can only give us more room to move around.