You focus on one thing for 40 seconds, on average, before getting distracted and moving on to something else. When this happens, it takes you 50 percent longer to complete your work, compared to when you stick to one task from start to finish without interruption. It also takes you an average of 25 minutes to resume working on that original task.

All of this is according to productivity expert Chris Bailey, who is the author of the recently released book "Hyperfocus: How to Be More Productive in a World of Distractions." For a year, Bailey ran a productivity project where he conducted intense research on how we can be as productive as possible in a world full of technology.