He may not even be aware that he does it, I know a couple of people who does the same thing and I am convinced that at least one of them isn't even aware of it. It is the kind that certainly gets the attention of everyone else around!
My current annoyance are a couple of members who provided unsolicited "guidance" because they don't seem to like what I am doing. Outside of that I can't think of much else, I tend to reserve my cardio for the bike outside or the Helix Lateral Trainer - and the latter doesn't appear to be very popular outside of cyclists (and there are three of them).