Most peoples homes are their office, their gym, restaurant, etc...

If you walk into a gym tomorrow after not being much of a gym rat and try to bench press twice your body weight right out of the gate, you're probably going to get a face full of barbell and a broken nose. 

I’d be looking at salon, spas, tanning, or dance/gym type studios to see if there is room in the area to attract something like that.

(which seems competitive in this area being just walking distance to shopping centers, groceries, restaurants, and gyms.

How close they are to grocery stores, gyms, etc.?

Just like you spend a lot of time practicing on the field and in the gym and watching film, spend some time learning investing and personal finance principals.

Added a picture of me at the gym because I'm all into the fitness thing nowadays.  

Our residents have access to a pool, hot tub, clubhouse, gym and basketball courts.

Our residents have access to a pool, hot tub, clubhouse, gym and basketball courts.

No gym, pool or other useless things.