Practicing exercise is recommended to treat depression for example.
But I think people, in general, if they are with depression tend to deal with it by doing activities that don't suppose much effort and give some reward in the least costly way (be it from playing videogames to consuming certain drugs, as long as they can be achieved). And that people cannot enjoy in hard activities just because having depression makes them unable to, even if they try to do the effort.
Is my hypothesis correct?