Opening and endgame theory.
What do you do?

Not more than 60 mins worth of learning. There's only such more new material that a brain can absorb correctly for accurate recall in just one day. I'd just play games for the rest of the day! :)

Not more than 60 mins worth of learning. There's only such more new material that a brain can absorb correctly for accurate recall in just one day. I'd just play games for the rest of the day! :)
I doubt it. but the brain can only concentrate for 45 minutes therefore you can learn more if you study for 45 minutes have a 15 minutes brake and continue. I think you can learn more on a day if you do it the right way.
similiar to school where you learn geography, german,english, math, biography and danish and more on the same day.
Basically if you had a full on day studying chess what would you learn?