Hey guys,

I already know what I want to learn and why - I have clear goals and motivation.

However, as I posted here, I notice that after 5-6 hours of studying my brain starts to hurt (I can't really describe it better) and I start getting unfocused and my performance decreases.

Those of you who study for 10-12 hours a day, how do you do it? I'm talking about pure studying, not counting working out, emailing etc.