If you spend 8 hours a day sleeping, that would mean that one third of your entire life you’re asleep. Many of us who are living our lives right spend even more time in the sack. But how well documented is this single activity that we spend more of our lives doing than any other? Not well, until now. Photographer and renowned late-sleeper David Ichioka has concentrated on this important part of everyone’s life in his series of Sleep Pictures. These are time-lapse series of pictures which document one whole night’s sleep. Each picture is taken 20-30 minutes after the last.