Heh... well, sounds like smoking off property is a pretty good motivation to get some exercise.
But I don't believe in treating old folks like children. Those clients are paying customers. They should demand a place outside to smoke, and if the mgmt won't allow that, they should leave.
Well, there is no reason why that nursing home can't continue to have a lounge or day room for these people to smoke in. Why on earth are they kicked outside to begin with!