Maslow said human needs can be prioritized: physiological, security, social, esteem, self-actualization.

I don’t mind working with my brains, but working with my muscles is dangerous for me since I can not be sure how long I will have full control of my physiology.

Realistically they can leave any time, lease or no lease, maybe just physiologically they won't leave.   

With my years working in engineering I often overlook the physiological perspective.

Aside from the social entertainment hot tubs provide, they also offer physiological benefits as many people are paying more attention to their physical and mental wellness during this pandemic.

I don't have a favorite class but I would recommend Anatomy and Physiology because as difficult as it seems, you will learn something.Btw, your school must have dope tailgate seasons.

To me its physiology, what is his why, weather it be a buyer or seller.

It is mostly for physiological support for risk adverse indivulaes wishing to sleep better at night.You should seek out landlords with actual first hand experience of situations where having a trust or LLC actually protected their assets in a law suit before you commit to one.

In your situation, both financially and physiologically, all indications are that the smart thing to do would be to sell. 

As a example if you balance your debt load on real estate with other accessible investments you may choose any debt balance you are physiologically comfortable with.99% of the determination is based on risk tolerance and how that is managed.