Group fitness is an intimidating and unwelcoming place sometimes. This "physical culture" is pervaded by impersonal gyms with personal trainers often there for the money and little focus on the trainee. Then there are the other gym members who will do their best to judge your workout and progress in strength and fitness. Plus they sometimes distract you with dropping weights loudly, grunting like a summer hog, or hanging in your ear throughout your workout.
This is a broad generalization; many gyms do offer gracious services and advice to their gym members. Nevertheless, I'm sure that many of you who don't have a local gym experience can relate to this. This scenario is nothing like true physical culture, and isn't what group fitness or strength training should be about.
Physical culture is more than being a personal trainer, fitness guru, or aspiring disciple of strength. Physical culture is group fitness; it means that, in or out of the gym, you do your best to share knowledge or passion about strength and fitness with others. Tricking people into trusting you as a personal trainer with altered photos or otherwise has no place in physical culture.
Often, large corporate gyms try to make money with flashy facilities and fantastic advertising, but a member will often because of the chiseled, happy personal trainers on the ads, then feel incredibly discouraged when they hit the gym and get none of the vibes they got from advertising.
People lose fitness motivation quickly when they aren't being helped or encouraged by a warm environment or by a passionate personal trainer. A physical culturist cares for this person because s/he knows that there can be no CULTURE without a COMMUNITY. And there are physical culturists in every aspect of fitness: bodybuilding, powerlifting, weight training, gymnastics, the list goes on.
But it is important to note that credentials alone will not make you a physical culturist. You can have enough personal trainer certifications to line every wall in your house, but unless you live and breath group fitness as your maxim, you aren't showing true physical culture.
Only your passion for your work and your heart to spread that passion and knowledge to others (for THEIR benefit, not personal gain) can start you on the road of true physical culture.