I am big into health, both mental and physical. I always tell my student to never give up their physical activities in order to "do better". I've gotten into numerous discussions with parents who want to pull their kids from teams in order to improve their grades. I think this is where a disparity in health awareness begins, the idea that they are separate. You can study on your own at home without having to go to a specific place, but physical health is being locked into a certain place.
I have a gym membership (a bloody expensive one) that I rarely use these days. What I have noticed however, from friends and colleagues, is that the idea of getting "fit" is linked directly to the gym. Most people feel that to get into "shape" they have to go to "professionals" at the gym to do so. Coming up to Christmas I had colleagues hoping their partner would gift them a membership to a gym so that they could lose some weight.
The pressure people, especially women, experience to lose weight in modern society is crazy. But locking your idea of being able to lose weight into a building is quite redundant. Most people drive to the gym to run in place or lift weights that cost a fraction of a gym membership.
Do you think there's an unhealthy association of physical well being and the physical place that is the gym?
Edit: To summarize, I think that people are deluding themselves into thinking that if they don't go to the gym they can't get into "shape".