There are many students who act like workaholics when they are researching a project. But this is not correct. It is as important to work smart as it is to work hard. Sooner or later the productivity levels are bound to drop. Dissertation projects take a long time to complete. The student should take efforts to spend time with family and friends. He can watch a movie or play a sport or just generally do something that is completely unrelated to his field of study.
Many students find that when they come back from their break, they feel fresh and energised. They are now twice as productive as they used to be. Their mind is full of fresh ideas and they are now able to look at the project from an entirely new angle. While taking a break the individual has detached himself from the project completely. He now finds his interest renewed and his passion returning to its old levels because working without a break can dim the enthusiasm of even the most passionate scholar.