Whether you work at your computer or just enjoy the occasional long gaming session, it’s important to take breaks regularly. Getting up to take a walk, grab a coffee, or do some stretches helps reduce eye strain, prevent repetitive strain injury (RSI), and is otherwise just plain good for you. And one study from the University of Illionoise at Urbana-Champaign shows that breaks might even enhance productivity by increasing focus.
Source: How-To Geek