Well I'm doing my masters at the moment, and I have never been able to really study while hanging. I hang BTC most of the time so I have to sit back. Best I can do is watch some (informative) videos, but I am not able to efficiently study. When I am studying I can still use an extender, but hanging I do while watching movies.
Impossible. U can lean at the edge of your chair and study at ur desk for a good few minutes but once fatigue starts kicking in u just want to take it off and can’t focus. At least when u start getting to the heavier weight