so what do you call 3 hours a day when you're forced to sit/stand in a carriage? sure, I can find activities to occupy myself, read a book, listen to podcast, etc, but this is not by choice. I'd rather go for a run. So if I cannot do what I want during the time, then the time for me is lost. And don't even get started on "learning new skills" while on a train. Studying requires concentration, at least for me, so no, I cannot learn new language while standing under someones armpit.