I opened by first gym when I was 25 in a 600 sq/ft space. We now have 2 gyms, one that's 1100 sq/ft and one that is 4000 sq/ft.
I've worked with a lot of interesting people; celebrity kids - no proof photos, sorry - athletes, etc.
I found AMA yesterday, got sucked in, searched through past posts and didn't see anything like this, so I thought that it would be fun to be on this side of things.
Here are some photos of our gym as proof (we are putting in new squat racks - hence the construction in the last pic): Gym pics
Edit: Went to take a nap 12:30pm pst. Awake now, had dreams of kittens. Thanks for such great feedback! I'm back on and off the rest of the day.