Did I use too many big words for you? Or is that a commentary about the for-profit health system?

Exercise intolerance is a symptom of really serious shit. Heart disease, lung disease, kidney disease. Those are things OP should really get checked out. Even if they can barely afford it. That might well save their life.

Unciv. Basically civ V on mobile.

It’s very questionable in terms of copyright, though

I second the doctor.

It might just be an utter lack of fitness. But even then a doctor might give you tips.

Or it could be something more serious.

After talking with him

In Germany, we say “hope dies last”