Fill in the Blanks Social Jet LagOnline version An activity about the text "SOCIAL JET LAG AND THE MODERN WORKPLACE" By Libby Longino by Thais Guimarães 1 night electricity environmental biological correspond shift sun earlier calendars three sync solar adjusts preferences break clock variation brains social biological hours later social No , your smartphone is not the only that shapes your life ; we are in fact bound by different clocks . The clock transitions us from day to night and back again . Our clocks , or circadian rhythms , govern any number of functions ? most obviously , sleep ? and each day with the solar clock as our process light through our eyes . And finally , there is the clock , that which divides our days into measured , and according to which our work , school , social and other operate . ( . . . ) humans' social clocks more or less mapped onto the solar and biological clocks ( . . . ) And then , ( . . . ) the industrial revolution happened , and made it possible for us to brightly light our homes into the , ( . . . ) , our social clock began to with the solar clock more dramatically than ever before , and now very few of us actually rise and set with the . But what does this mean for that third clock , our circadian rhythms ? It turns out that the degree to which people's circadian rhythms to the solar clock varies , and that while this is influenced by a number of and factors , some of that variation is genetic . That is , the difference between proverbial " larks " and " owls " may have to do with different " chronotypes , " or sleep time . Whether or not you have an or chronotype ? whether you're a lark or an owl ? impacts how well your body to the social clock .