In just a couple of days – on the 21st of May – the Global Corporate Challenge kicks off for 2009. Take note of that date, white collar workers of the world; sedentary, myopic and spinning sadly on your ergonomic chairs. On the 21st of May, the revolution hits the road! Not by plane, train or automobile but the good old fashioned way: on foot.   While not all office workers are unhealthy, short-sighted or depress...