I'm thinking used Peloton ($1500), nice tread mill,  a bench, full set of dumbbells, some kettle bells, yoga mats, jump rope, exercise ball, punching bag, etc. 

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But wanting this house to function perfectly  and be desirable as a single family home if need be.That being said, I designed it in such a way that all 4 bedrooms have an amazing view, yet complete privacy as they can't look at the  other bedrooms and have the feeling of being alone in the desert surrounded by Joshua trees.Every bedroom has it's own bathroom and direct access to the pool, spa and trails directly though  the large sliders located  in each  room.I have a large kitchen, living, dining space in the middle of  he house so everyone can get together to enjoy the view, pool and  outdoors.Of course, a game/yoga room and activities are always a big plus.I hope this somewhat answers your question.

@Mike Dymski hilarious but don’t forget yoga studios!

Invite them to golf, coffee, tea, yoga! 

Even though I work quite a bit, I still find time for yoga in my backyard, snowboarding 1 hour away from my home, I'm 15 minutes from 3 beautiful rivers and 1.5 hours from the Oregon coast.

IE , sauna, steam room, yoga classes, etc.

Here's the gist:0) House is professionally cleaned and painted prior to tenant move in.1) Tenant moves in April 1, 20232) 2 weeks later, tenant complains that the front porch needs to be powerwashed, deck needs to be refinished because he might get splinters when is barefoot doing yoga, ants in the kitchen after he left pizza out the first night.

If you love yoga, you will probably be able to do that forever. 

If this were true, I as an investor could go buy up a few blocks of post-industrial wasteland in any one of a hundred failing cities around the country, throw in a coffee shop and a yoga studio and some concrete counters, and just start raking in the dough while simultaneously destroying the lives of the locals.