It's exam time and the only period when students become creative, productive and greedy.
One of the many factors I've observed during this time (among my peers) is 'Isolation'. The more isolated you are, the more productive you become which ultimately leads to yielding better grades.
I have isolated myself from friends, now I indulge In less conversations, which helps me in being more productive, manage time and chart out my study hours.
When I say isolation (in my case) it's just from peer to peer interactions. I can't possibly imagine a day without Internet. So I make time to indulge in activities such as blog, tweet, poke and stuff to my hearts content.