It always creeped me out how people would get this notion like I played a lot of sports seemingly out of thin air. Until I tested as ISTP/p I used to think they just loved to imagine me getting my face smashed in or some other malevolent thought. I think such insinuation of competition stems from criticism of our honesty. As one assumes the ISTP likes to pick fights which is often not the case.
I do not enjoy the usual crowd that frequents gyms that usually have a less than confident and enthusiastic nature. I like to work out at home its interesting learning how the body works like limbering up and chiropractory stuff.