If you need five minutes every hour to look at tweets or to just surf the Internet, you need to schedule that into your schedule, allow yourself to do that. Because when people start procrastinating, what they've done is, they've tried to ignore that urge. They try to deny themselves time on Facebook or time surfing the web.
We know there are certain chemicals that are designed to give us a rush of pleasure. But, one of the most amazing things about being human is our capacity to override that pleasure. To either say, 'I don't need that pleasure right now. I'm going to ignore the craving.' Or to find something else that we find a deeper sense of reward from.