Yeah, that seems about right.
Why does leaning forward improve concentration. Surely theres a study to be done here. A pointless study by university psych kids, but a study nonetheless
You can see better. When I’m lazy I lean back and accept a little less detail because of the comfort I receive. But to concentrate better I lean forward. The closer I get to the screen (it’s probably just imagination but anyway) the more I have the feeling to have the better overview.
Also: less comfortable (within reason) means muscles less relaxed (within reason) means faster reactions.