>Why do most people fail to walk even the 10,000 daily steps needed to stay healthy? Where does that figure come from? A lazy guestimate of 1m/stride puts that at 10km/day. That's 2 hours of walking a day. Who the hell spends 2 hours a day walking?
I did find two studies related to amount of walking to show health benefits:
http://link.springer.com/article/10.2165/00007256-199723050-...
http://wlv.openrepository.com/wlv/handle/2436/11110
No mention of number of steps. I think people add it for a way to equate a certain amount of time walking.