Are you someone that gets a great night of sleep and ranks at the top of your peer group? Are you, instead, wrestling with sleep but don't know how your sleep is doing overall or how it changes day to day?
Did you get up this morning feeling somewhat-rested or not rested at all? Are you ordering that third cup of coffee mid-morning to keep your eyes open? Are you having trouble concentrating by early afternoon? These signs might suggest that you did not have a good night's sleep. Light seeping into your sleeping environment may be a factor in preventing a restful sleep.