Lazy people don't want to expend energy; they don't want to do anything. But whenever people are bored, it means they want to be doing something else. It could be reading a book, watching a movie, playing video games, or throwing a frisbee around. Regardless of what it is, if the opportunity to do something fun or exciting came up, people would take it.
People are lazy when they don't care. If you tell somebody they have to sweep the floor or make their bed or write an essay about what they did on summer vacation, of course they will be slow and lethargic. Of course they will resist it and find a way to get out of it. Looking for a loophole to get out of a task is a more engaging activity than the task itself.
If you want people to do something, make them care. That is why it is so critical to grab your readers' attention as soon as possible. You want them to turn the page, to think about your words and share them with others. So, don't be boring; in return, your readers won't be lazy.