Even the biblical God after all six days of work in the seventh "rested". Although the human brain works without a break until his death, we need to give him a break. Once one of the polyglots past, who knew eight languages, said he never worked more than 15 minutes. Break for 3-5 minutes every 20-30 minutes will help keep our minds fresh and spicy for 4-5 hours. In this case, we would not necessarily be significantly distracted from their work. Of course, it is impossible here to identify any pattern or formula. Each will operate its own methodology.
For some interruptions may be moments, but for others – a minute. Above all, we need to know what suits us and apply it. It is important to remember that the main purpose of leisure – relax. Sometimes we can achieve some degree of relaxation, doing something abstract. We can make tea or do an easy workout. As you know, for the effective work of the brain requires a lot of oxygen-rich blood.
Some scientists say that a few simple physical exercises increase the amount of oxygen supply to the brain by 20 percent. Maybe for some it is enough simply to look away from the text to draw attention to their surroundings, pay attention to what is happening outside in the street and etc. For some of us can be a big help use "stop the internal dialogue." It's no secret that in our mind is constantly going on an internal dialogue.