None of my friends or family work out regularly or even sporadically. No one. My DH is a regular couch potato but oddly enough he's always been very supportive of my fitness habit and every time I work out he asks me what workout I did and how was it. I always give him details even though I know he can't possibly remember all the workouts I have - or really care.
He always encourages me to try new programs and/or instructors but he doesn't exercise himself. Yeah, I tried to encourage him but after 20+ years of marriage I know a losing battle when I come upon it.
I have a workout room set up on the ground floor and most of the time visitors to my house have to pass by it when they enter the house. When I show them my fully-equipped home gym, I mostly get blank stares or looks of incredulity and incomprehension. Whatever.....as long as I'm happy, who cares.