Try walking up stairs
rather than taking the lift, get off the bus a stop earlier or simply try to walk short journeys rather than driving (Weather permitting!).
This is a public transportation society, Though PDAs are growing in versatility, most mobile wireless is still via laptop--a weight that has to be lugged around all day on buses, on trains, up stairs
"Are you having trouble breathing, say when you walk up stairs
?" And because he's on the eighth floor and the elevator's broken again, I wonder if he's doing a brain check, trying to figure whether all those years of worry have finally washed away my grey matter.