Science in a Minute 020420 Morning Alarm Sound May Affect Alertness after Waking

A new study from Australia’s Royal Melbourne Institute of Technology suggests the sounds that rouse you from your sleep could determine if you’ll wake up feeling tired and groggy or refreshed and ready to face a new day. The study indicates that harsh alarm noise could make you feel sleepy while waking up to a melodic alarm, like your favorite song, could improve your level of alertness.