I suspect they think I'm nuts

I order to improve my (non-existing) finger strength I decided to do between one and three pull-ups on a certain desk's 2cm rim every time I pass it. This desk is between me and (a) the printer and (b) Marian's desk, so I pass it very frequently, even if I were to reduce the visits to Marian's desk. It is one of the few unoccupied desks, I am not stalking somebody with my pull-ups, thank you very much! Nobody has said anything in the past two days (started on Monday) even though at least two people have seen me do it.