I'd venture a guess that there's a good chance you text --- a lot.
Maybe at lunch or before you go to bed, but probably while you're doing other things, too --- "listening" to your teacher talk about the Civil War, sitting at the office or even walking, biking or driving.
In his book A DEADLY WANDERING
, Pulitzer Prize-winning journalist Matt Richtel explores a "texting-while-driving" incident that claimed the lives of two rocket scientists in 2006 and the greater influence of technology on the human mind and society. See his blog post below, where he discusses the book --- it will definitely make you think twice about your own texting behavior.