 you know, it's usually quite easy to avoid eye contact and interaction with people but if there's people everywhere and everyone wants the bench and wants that bench press, well that cardio machine and there's not any, they're going to ask you how many sets you've got left or where are you going to be finished and then they're going to hang around and sort of give you weird eyes or I don't know, not very fun. Sweaty surfaces, especially if you're OCD that can be a big one because if you really don't like the sensation of being wet from solid objects that could be an area of difficulty. Also the complex movements which is one of the ignitions for this video, someone commented in one of my last videos that they were wondering, you know, how do I cope with these movements? You know, I keep finding that I hyperextend on all of the machine.