Are you sure you are not just doing replacement therapy and you really should be buying a property? 

In one of my units I have dumbbells, a yoga mat and bands.

We have a tropical backyard with pebbletech pool, and allow a doggy (great therapy!)

I teach private yoga and have been toying with the idea of adding it as an experience to Airbnb for my guests.  

Sometimes players need physical therapy (rehab), some need more 1-on-1 coaching (optimization/advertising) and some to be traded (1031 exchange).

The person then emailed back: "if on a rental say no pets, will an application still be considered with two registered therapy dogs?

Look up medical for Shock Wave therapy and/or Pre Nuvo body scan.I just don't like Enabler or Victim approaches. 

because lord forbid ya go a week without the $300mnth Goat Yoga membership, or the daily $10 non-fat triple soy late caramel twist double shot stirred not shaken starbucks....

I think you should maximize the guests and maybe offer a small weight set and yoga mat. 

Additionally, try collaborating with local businesses like spas, wellness practitioners, yoga, wineries/taprooms, etc... and try some messaging with them around wanting to promote them in your blog and on your property.