It's kind of both lol. I'll study for an hour, take 10 minute break, study for another hour, take a break, eat lunch, back to studying with intermediate breaks between every hour of studying.
Uh oh... I hope I don't break my 35 minute watch... although now that I just use it propped up I'm regretting getting a left handed version because it's a super pain in the ass to manipulate it.