Pomodoro means tomato in italian, because the guy behind it, Francesco Cirillo, is italian and also because he thought about it with one of those kitchen timer shaped as a tomato. I'm not gonna explained the whole technique, everything is here. After trying it several times, what I appreciate the most of this method is the way it helps handling interruptions like phone calls or questions from colleagues. It is very helpful and makes an impressive difference, even on a 25min session of work.