Are you working over 10 hours a day non-stop in an effort to be more productive? Then you are fooling yourself. We are not machines and as humans we pulse. We take energy in we expend energy, we work we rest, we are awake, we sleep. Tony Swartz argues that it is energy more than time that we need to bring to our work to be more efficient. Some timely reminders of what is obvious and yet seemingly forgotten by millions of people everyday."